I do not own Adventure Time, all rights belong to Pendleton Ward.

It was past midnight when Finn and Jake had just gotten back from an uncharted dungeon. They had discovered it on their way back from the Candy Kingdom. With nothing else planned, they spent a good part of the day battling monsters and kicking evil's ass. Returning home they were both very tired and decided to retire for the night. Jake went on ahead to sleep as Finn opted for a late night snack. Opening the fridge, Finn discovered that many items had mysteriously been drained red. Confused, Finn picked up what looked to be a white strawberry. Gazing at it, he discovered two very distinctive bite marks. After a few seconds Finn was able to put two-and-two together to realize what had caused this decolourization. 'Marc-", was all Finn was able to get out before a black mass had pinned him down to the floor. During the commotion, Finn was able to see two glowing red eyes peering through the sea of jet black hair. "Finny", purred Marceline as she glazed at him through the darkness, "where have you been?" Finn could only whisper as he said, "fighting off all the evil Marceline." She looked at him once more before sitting on his stomach and smiling back at him. She leaned down and said," After all that hard work, I suppose you deserve a reward." Slowly moving back and forth. she began to grind on his torso and lower stomach. This earned her a moan as Finn slowly put his hands around the small of her back. He kept rubbing up and down until he was squeezing her round ass. "Finn", Marceline hissed as Finn sat up and started kissing her neck. He went back and forth around her neckline, taking his time. This was a no-no for the Vampire Queen, as she grew impatient and ripped his blue shirt off. Finn squeaked as she used her long snake like tongue up and down his stomach. Pushing him to the ground again, she took off her grey tank-top, revealing her pale chest. She immediately felt a reaction as Finn's erection poked her in the thigh. Finn's face turned bright red and he moaned as Marceline started began kissing him passionately. With tongues connected, Marceline dragged her knuckles against Finn's ribcage, forcing him to moan in her mouth. Trying to get the upperhand, Finn took revenge by swiftly grabbing Marceline's tits and giving them a slight squeeze. Marceline fell off in surprise as Finn scrambled up and straddled her. Still in stock, Finn took this opportunity and started unbuttoning her grey jeans. Leaving her just in her black lace panties, he rubbed both of her slender legs up and down. Breathing deeply, his hands formed in the middle of her stomach and started moving down. His hands gripped the lacy bottom of her panties-when suddenly the kitchen door busted open and Jake yelled, "what's going on in here!?" Finn looked in horror at Jake and then back to… Marceline? The raven haired siren had somehow disappeared without a trace, leaving Finn shirtless with a rock-hard erection. Finn looked up hopelessly at Jake while the dog left, disgusted with his best friends appearance. As finn straightened up and looked through the kitchen window, only to see an an Marceline flashing him as she disappeared into the night.