AN: It definitely means a lot of all the reviews from last chapter. That is my favorite chapter of this whole series, so I'm glad you enjoyed it. I hope you enjoy this one too. Don't worry, you won't need tissues for this one.

Pranks

She was at fault for this. She started this prank war about a week ago. She had the day off and he had a meeting at Black Pawn, so she decided to set the parental controls on the T.V. She knew Castle was going to want to come home and relax, but he was going to be in for a surprise when he found out he could only watch Nick Jr.. When he came home, she pretended everything was normal and told him to sit down on the sofa while she made him a cup of coffee. He did so and as she was making the coffee, she heard him yelling at the T.V.

"Why are you blocked?! We don't have parental controls!"

Kate bit her bottom lip, knowing that this simple thing wasn't extreme, but him yelling at the T.V was a little amusing, which is exactly what a prank was. She brought his coffee over to him.

"Beckett? What's the code?"

"What code?"

He gave her a look. "Beckett, I'm not watching Nick Jr. What's the code?"

"Look at your coffee and maybe you'll find your answer."

"Beckett..."

"Look at it."

He did and saw that she had written the numbers out with the foam. He entered them and the block was turned off.

His payback wasn't as simple. He replaced her conditioner with mayonnaise while she was at work. He didn't go with her because he wanted to work on some chapters. His prank was part of him procrastinating on those said chapters. He got the mayonnaise out of the fridge and emptied her conditioner bottle. There wasn't a lot in there, so he really wasn't wasting too much. He knew that she was going to want to take a shower when she got home, so this was perfect.

When she got home, he was writing on his laptop. He could see that she was exhausted and sure enough, she told him that she wanted to just take a shower and get into bed. She pressed a kiss to his lips before she headed into the bathroom. He was tempted to tell her not to use the conditioner, since he saw that she was tired, but this was payback. He tried to focus on his writing, but he kept waiting for her to discover what he had done. Sure enough, after a few minutes, he heard it.

"Castle!"

He wasn't sure if he should run for his life first or put her gun in the safe. He went with the latter. As he closed it, she came out with a towel wrapped around her body and her arms crossed over her chest. "Something wrong?"

"Oh you know damn well what's wrong, Castle. You put mayonnaise in my conditioner bottle!"

"Maybe next time, you shouldn't put the child locks on."

"Well you are a man child so I thought it was only fitting." She grabbed the new bottle of conditioner, which he had left on the dresser for her earlier, before heading back into the bathroom.

She got him back the next day. If he thought putting mayonnaise in conditioner bottles was fun, well he was going to love to discover that the filling in the Oreos was actually toothpaste. He was out with Ryan and Esposito, having a few drinks. She declined the offer, saying that she was going to take advantage of a quiet loft and run a bath. She took her bath, so she wasn't really lying. She just left out the part where she was going to be pranking her husband.

She opened about five Oreos and scrapped the icing off of them. She then refilled them with the cinnamon toothpaste. She picked that one because Castle hated that one. She didn't blame him, since she preferred the mint kind as well, but for this prank cinnamon was her go to. She made sure that they looked exactly like the others in the package before she placed them on a plate. She poured herself a glass of milk before she made herself her own plate, obviously ones with real icing in the middle.

Castle had walked in as she was just eating her first one. "Cookies and milk without me!? I hope you're sharing." She smiled and pointed to his very own plate. He smiled and placed a kiss to the top of her head. "I have a great wife." He poured himself a glass of milk and sat down next to her. He picked up the Oreo and placed the full thing in his mouth. Kate bit the inside of her lip, trying not to laugh as his eyes widen and he spit out the Oreo.

"What is that?! That is not an Oreo!"

"Oh it's an Oreo, just with a different filling." She then handed him the tube of toothpaste before getting up from her seat, walking away with her victory.

He waited a few days before he got her back for that one. He was helping Alexis move into her last college dorm room and she was out with Lanie, so he had plenty of time to pull this off. He made some Jello and put her badge inside the Jello. He was going to put her gun in there, but he figured that this would be easier to clean off. Even though they were in a prank war, he didn't want to damage anything of hers and he didn't want to hurt her. He put the Jello in the fridge and let it cool. He just hoped that he would get home before his wife.

He did end up getting home before her, which let him transfer the Jello mold onto the plate. He laughed, somewhat amused by his own prank, as he saw her badge in the center. He placed it back in the fridge and taped a note to the plate that said, "Hopefully, your murder won't be as messy as getting your badge out. Love, Rick." He closed the door to the fridge and went to wash the bowl, leaving no evidence behind. Kate got home and had already eaten, so they just went to bed. She was on call, so she wanted to get some extra rest, just in case.

Sure enough, her phone rang at midnight. Castle was in a deep sleep though and didn't wake up until he felt her shaking him awake. "What's wrong, Kate?"

"I can't find my badge. Did you see it?"

"No, I..." He then remembered what he did and she saw that look.

"Castle, what did you do."

He gave her a smile. "You might want to check the fridge."

She left their room and headed into the kitchen. She opened the fridge and saw her badge, trapped in the Jello. "Really, Castle?!"

Now, it was her turn to get him back and end this prank war with the ultimate prank...she just couldn't think of what that was. She asked Lanie for help, but she was giving her things that might end up hurting him and she didn't want that. She told her to spray the floor with cooking spray, but she didn't want Castle breaking a hip. She didn't trust Ryan or Esposito not to tell Castle that she was up to something, so she didn't ask them for help. She just sat at her desk, trying to think of the perfect prank to pull on her husband...that was until a travel coffee cup was put in her line of vision.

She smiled as turned her attention to Castle. "I thought you said you weren't coming in today."

"My meeting ended early and it's too quiet around the loft. What were you lost in thought about?"

She sighed. "I'm trying to think of the ultimate prank to pull on you."

He laughed. "I'm guessing you're stuck?" She nodded. "Why don't we call a truce and focus on who's going to win our laser tag battle instead?" He extended his hand, waiting for her to shake it.

She smiled at him and shook his hand. "Truce, but you should know that in high school and college, laser tag was my sport."

"Katherine Beckett, just when I thought you couldn't get any hotter."