TrainOfThought15 suggested 4, 11, 18, 23 and 29. I tried with 4, but, well, it didn't quite turn out as that, but devolved (evolved?) into something else :) I hope you guys like it.

Reason #11: It's raining

Reason #18: Show off new lingerie

Reason #23: Just shaved legs

Reason #29: To avoid cleaning, studying or doing work of any kind

Jesse hated it when Beca was stressed. She didn't mean to, but she tended to take it out on him. There would be the occasional, "Stop tapping your pencil, you're ruining my concentration." She even once asked, "Do you have to sneeze so loudly?" Jesse wasn't sure he could change his sneeze. He once tried to keep the sneeze in by plugging his nose, but the pressure pretty much exploded inside his head, and he wound up screaming about a brain aneurysm, which in turn caused Beca to be just as irritated with him. It was a lose-lose situation on that one.

Sometimes he was able to calm her down by wrapping an arm around her and humming softly as she studied or by distracting her with other activities. Other days, like today, nothing seemed to work.

"Do you have to hum so loudly?" Beca asked. Jesse was sitting on her bed writing his paper on his laptop as she sat on the floor, books and papers scattered and strewn about her in an organized chaos only she understood.

Jesse blinked and looked down at her. "I didn't realize I was humming," he answered. He really didn't. She sighed heavily and looked back down at one of the books, writing down more notes. "Did you want to take a break? I can make you lunch. Or we could take a walk outside, get your mind off this test just for a little," Jesse suggested.

"Make me lunch? Are you going to try using the stove again? Because that was totally awesome last time when you almost set the entire place on fire," she said, arching an eyebrow at him.

"Hey. Hey. I wasn't trying to light anything on fire. I was trying to clean up!" he answered indignantly.

"Jesse. The stove was still on. With fire. You used a napkin. Made of paper. To clean up the sauce that splattered… next to the fire. This would make sense if the fire was, you know, not on," she laughed at him.

"You mean paper is flammable? Who would've guessed!" he grinned at her and she rolled her eyes.

"No. No lunch. I really need to study."

Jesse set his laptop on her bed and got up, carefully stepping around her scattered study circle, and sat behind her, wrapping his arms around her and hugging her to him. He kissed the side of her head. "You need a break. You're stressing yourself out," he said as he tucked her hair behind her ear, starting to kiss her neck softly.

Beca swatted at him. "Jesse, not now," she laughed. "You need to write your paper. I have to study for a huge test. No distractions! My dad's going to kill me if he finds out that I didn't do well on this test. I hate it when he's friends with my professors," she mumbled.

Jesse wouldn't budge. "Fine, but you should still eat something. You eat like crap when you study." He pointed at the bags of jelly beans and Twizzlers on the floor next to her.

Beca poked Jesse in the forehead. "Don't hate. You eat it just as much as I do." She took a bite out of the Twizzler in her left hand and put it in front of Jesse's face.

"Yeah ok. You're right. It's one of the main reasons why I prefer studying at your place. You have all the unhealthy snacks," he said as he bit the Twizzler and ripped the rest of it from her grasp, causing her to shove him backwards. He laughed and took her with him and she collapsed onto his chest. "Like taking candy from a baby. Literally. You're like, the size of a baby. You're so damn small."

She swatted at his chest and sat back up. "You're a horrible distraction," she huffed. "I'm wasting valuable time here."

"You mean you're wasting valuable time not cuddling with me."

Beca turned around and gave him a knowing look.

"Okay, fine, I'll go sit in a corner and not speak for the rest of the day," Jesse said as he got up and trudged back to Beca's bed, pouting at her.

Beca just stared at him. "Jesse. Don't even pretend you're capable of such a feat."

Jesse grinned at her, gathering her pillows about him and settling back down on her bed with his laptop. "You're right. It's why you can't resist me."

It wasn't ten minutes later that Jesse found himself outside, his laptop clutched in his hands as he stared at the locked door to Beca's apartment. Apparently she didn't appreciate him shaking his ass in her face to "Baby Got Back." Jesse thought it was funny at the time. He shrugged and started to walk back home. He should really finish this paper…

It was raining. Of course it would be raining. The weather forecast hadn't even called for rain. Jesse inwardly cursed the local weatherman as he sloshed down the street, his clothes soaked long ago on his walk to Beca's apartment. There was barely a cloud in the sky when he left his place, but not five minutes later, this deluge erupted above his head, and there was nowhere for him to go. He clutched his backpack to his chest, using as much of his body and his coat to cover it up. Anything to prevent his DVDs from getting soaked. She seemed less angry today (she called and apologized for kicking him out yesterday), so he had planned to surprise her with lunch outside (it was nice) to take her mind off cramming for her test. Apparently, Mother Nature had other plans.

He trudged slowly up to Beca's apartment and dejectedly put his head against her front door with a soft thud-thud, knocking on it with his forehead. Beca opened the door and gasped. "Dude. What are you doing?" She ushered him inside and the first thing he did was drop to the floor, cradling his backpack in his hands. He was afraid his movies might be ruined. He retrieved the DVD cases and sighed in relief. His backpack was damp, but the movies were safe.

"Everything's okay," he said. "Movication can continue as planned."

Beca gaped at him. "Jesse, you realize you're soaked from head to toe, right? They're just movies. You're probably going to get sick."

"Just movies?! What's wrong with you, woman?!" Jesse gasped as he stacked each DVD case neatly to the side of the door, dropping his wet bag, soaked jacket, and soggy shoes on the linoleum. "Why do you insult me so?"

"You're absolutely incorrigible, you know that, right?"

Jesse stood up and wrapped his arms around her, reveling in her warmth as she squirmed in his embrace.

"Dude, gross! You're all cold and soggy! Go get in the shower." Beca tried to escape from his grasp, but he wouldn't let go. She sighed and stopped fighting, letting her forehead smack against his wet chest. "This is extremely uncomfortable."

Jesse smiled and kissed the top of her head. "You just want to see me naked." He winked at her as he took a peek around the apartment, noticing Fat Amy's shoes were missing, and promptly unzipped his jeans, letting them drop to the floor in a loud splat. He watched as Beca's eyes twitched as he reached under the hem of his shirt and tossed his shirt off, letting it plop to the ground with another wet smack. He saw her eyes travel up and down his body and he shivered, partly from the cold, partly from her look. He grinned lopsidedly at her and decided to repeat his performance from yesterday.

"You like big butts and you cannot lie," Jesse started to sing as he shook his butt in Beca's direction.

"Way to ruin the moment," she laughed and slapped his butt. "Get your ass into the shower before you catch a cold!"

He continued to sing and shimmy his way down the hall to Beca's room. He heard her follow behind, rummaging through her room as he walked into her bathroom and turned on the water. He stood outside the shower, waiting for the water to get warm. He suddenly felt her little hands wrap around his waist from behind him. He smiled and intertwined his fingers with hers, covering her small hand with his much bigger ones. He brought her hand up to his lips and kissed each knuckle gently.

"I don't want to study right now," she mumbled into his back.

"I don't blame you. Hot guy, nice ass, stripping in your hallway. No one can resist that," he chuckled.

She used her free hand to draw circles around his stomach, playing with the hairs under his belly button. He shivered as her fingers tickled his skin. "I was going to surprise you since you were trying to be nice yesterday and I kicked you out…" she let her words trail off.

Jesse had no idea what she was referring to. He spun around to ask her what she was talking about, but the words never left his mouth. He let out a squeak (or something like that. He wasn't quite sure the sound he made was human) of surprise as he took in what she was wearing. Beca was looking at the floor (was she capable of being shy? He didn't think so, but that look was killing him), her hands down at her sides, fidgeting uncomfortably along the red, lacy, see-through lingerie hanging barely below her hips with a matching thong. The image burned itself permanently into his brain. Jesse gulped and tried to speak, but nothing came out. His mouth was dry, and he wet his lips repeatedly, trying to speak. He kept rubbing his eyes and staring at her. Beca started to bite her thumb, looking up at him with unsure eyes.

That look was what broke him. She barely got out a questioning, "Jesse?" before his lips crashed down upon hers, his arms wrapping around her tiny frame, feeling the lace caress softly against his skin. He kissed her like he hadn't seen her in years, reveling in the feel of her body pressed against his, the lace tickling him. Her hands clutched at his hips, fingernails digging in. He realized he was grinding into her when his wet boxers started chafing him.

He broke the kiss and laughed. She looked up at him questioningly, lips swollen from his kisses, eyes wide with yearning. He tried to explain what was so funny, but realized that words weren't really worth trying to form at this moment. It was taking too much brain power to focus on being coherent, so he just shook his head and said nothing as he dropped his underwear from his lips, letting his last article of clothing splat to the bathroom floor.

Beca's eyes went from his newly exposed erection back up to his eyes and he saw them change to mischievous. Before he could question her, she dropped to her knees and her little hands and mouth went around him and he wavered, hands going out to find the wall for balance. He let out a strangled choke as her mouth and hands stroked up and down, her tongue doing these things to him that made him want to ravage her for days until neither of them could walk. "Beca," he whispered. She hummed in response and his eyes rolled into the back of his head. He tried to stop himself from thrusting into her, but he couldn't, not with her hands encouraging him, her tongue licking his tip slowly before her mouth enveloped him again. "Bec—" he tried again, but she wasn't relenting, He tugged at her shoulders, wanting her to never stop, but needing her to stop all at the same time.

She looked up at him with half-lidded eyes, a smile playing at the edges of her mouth. That dangerous, wonderful, beautiful mouth doing obscene things to him. He dimly wondered if he should feel a little embarrassed at himself for how he was behaving, grunting and shaking with the effort of holding himself up. He felt it building and he didn't want to, not yet. He wanted her. Needed her.

Before he had a chance to say anything, her mouth and hands were suddenly gone. The open air hit him and his eyes flew open frantically. She was standing now, staring at him with a devilish grin on her face, her tongue running across her bottom lip. He was panting heavily, the hand against the wall clenching and unclenching in a fist, trying to make sense of what was happening. She had stopped, just like he was going to ask, but he regretted it dearly. "You… You're mean," he choked out between breaths.

She shrugged at him. "You were trying to get me to stop."

"Not if you were going to push me to that point."

"You didn't say that," she grinned sweetly up at him. Seriously. She was going to kill him. Slowly and deliciously. He could live with that.

"I was otherwise preoccupied," he glared at her. His breathing had evened back out (he wasn't sure if he was happy or not about it yet), but his erection throbbed painfully, screaming at having been left alone. He stalked towards her and her eyes went wide as he wrapped his arms around her and turned them so that her back was pressed against the wall. "Someone was messing with me," he growled at her.

She shrugged nonchalantly and Jesse's hands started wandering freely, enjoying the feel of the thin lace covering her body. His lips descended to her shoulder, kissing at the little red straps. One hand lifted one of her legs to wrap around one of his, making it easier for him to thrust against her gently. His hand caressed her thigh, enjoying the feel of the smooth skin. "I even shaved my legs for you," she laughed into his ear. He loved the sound of her laugh. It made him feel special; like he was the only one that mattered. He groaned into her neck, her scent filling his nostrils. He was seriously going to just die right here and now. His entire body was thrumming, waiting in anticipation for something he refused to give into just yet.

He wanted to feel more of her, but she was just so small. He picked her up and her legs went around his hips, arms wrapping around his neck. The movement caused him to press right against her, and she moaned, her head tilting back into the wall to expose her neck. The noises she made caused his head to swirl. He wanted to get her out of the lingerie as fast as possible, but the position they were in made it extremely difficult. It didn't help that she was rubbing herself against his erection, causing his body to spasm uncontrollably. The noises she was whispering into his ear weren't helping him concentrate in the slightest.

"Fuck it," he grumbled, deciding to slide the straps off her shoulder, letting the top bunch around her waist.

She opened her mouth to ask him a question, but his mouth closed around an exposed nipple, and whatever she wanted to ask evaporated into an, "Oh…" Her nails dug into his scalp, his shoulders, his neck. He didn't care in the slightest. Her laugh may be one of his favorite Beca-isms, but these noises she made, they were reserved just for him. Only he could illicit the sigh that escaped her mouth as a hand reached up to caress her other breast. Only he could make her moan that way as he nipped at her nipple, then swirled his tongue around it, flicking it back and forth. Her hands were frantic at his shoulders, her hips arching against him again and again as she rubbed herself against him.

The bathroom started to fog from the heat of the shower. "Water's warm," she whispered between moans, her teeth nipping at his ear.

"Shower sex it is." Jesse gently backed away from Beca, letting her feet slowly unwrap from his hips to rest on the floor of the bathroom. The separation caused each of them to frantically tear away her lingerie, tossing it to the floor to join with Jesse's wet boxers. He got into the shower and reached a hand out for her to hold onto as she climbed in with him.

The water was warm as it hit his back, causing goosebumps to run down his cold body. He forgot that he was still damp from being stuck out in the rain. But of course he forgot; his little spitfire of a girlfriend was standing in front of him, wet curls clinging to her skin, naked and staring at him with eyes that bore into his soul.

She wrapped her arms back around his neck and tiptoed up so that her lips were next to his ear. "I want you." With a swiftness he didn't know he possessed, he grabbed her and lifted her up so that her legs were back around his waist. She squeaked as her back pressed against the cold shower wall, but it soon dissolved into a moan as he pressed into her. There was no more waiting. He wanted her just as badly.

They paused, foreheads pressed together, breaths coming in and out in shallow gasps. She gave him a nod and he pulled out and pushed back into her. Her nails raked up and down his back, the hot water making it sting a little against his skin. His hands were holding her up, incapable of doing anything else for fear of making them both slip in the shower. She ground against him as he pushed in and out of her, their breathing becoming more and more labored. She arched her back, pushing towards him, trying to reach the point that he knew he was already so close to.

She kissed him hard and his tongue slipped into her mouth. Breathing was becoming more difficult with the heat of the shower, and she broke the kiss, crying out as he continued to push her up against the wall. He felt one of her hands leave his back and he paused briefly to look at her, watching as her hand reached down to touch herself. It was his undoing. He gripped her hips tightly, praying not to drop her, as he frantically pushed in and out of her. He could feel her hand between them, working to bring herself closer to join him. He cried out as she yelled his name, her hand flying into his hair for balance as she moved her hips with his.

They slowed their movements, gasping for breath. His legs felt like jell-o as he struggled to maintain his balance. The water continued to pound on his back as she slowly let her legs unravel from his body, feet resting on the shower floor. They were both unsteady, waiting until their breathing slowed to a normal pace, his weight still pressing her against the back of the shower.

"Water's going to get cold soon," she mumbled against his chest.

He nodded in acquiescence, his cheek moving against the side of her head. She pressed a kiss to his collarbone and he shivered in response.

"Can this please happen whenever it rains?" he asked.

Beca smiled and kissed his cheek. "Don't count on it."

Love it? Hate it?

Also, I have to say, my in-laws were in town this weekend while I was writing this... Awkward. But the idea was stuck in my head, and it had to be done for the greater good. Carry on.