I'm sure your familiar with the cartoon network show "Adventure Time" in the episode "Marceline's Closet" is were it all takes place afterwords 

                                       “Erotic Adventure Time”

                                            Sugar in the Sand 
                                                  Chapter.1

It was midnight, Finn was rolling back and forth in his bed because he couldn’t sleep after seeing Marceline naked that night. Finn start to feel weird just by thinking of Marceline's honey pot. By trying to get Marceline off his mind Finn grab a lock of Princess Bubblegum's hair he had hidden under his bed to comfort him. Now Finn feels at ease with P. B’s hair rubbing on his cheek, with that Finn return's to bed to sleep soundly and dream of adventures yet to come.
  As Finn sleeps, he starts to have one of his adventure dreams. He fights bravely agents a evil dragon in the desert of doom. Finn dodge the dragons fiery breath by ducking underneath the attack. Finn saw his chance to make his move,decapitated the dragon with his sword . Feeling pound of himself for  slayed the evil beast he then notes a tiny Peppermint Butler was waving at him, telling Finn to come over to him. Finn walks over to the tiny Peppermint Butler to see what hes pointing at over yonder. Finn look in the direction were Peppermint Butler was pointing at and there, there was harem tent places in the middle of a   oasis. Finn look again towards Peppermint Butler but he was gone with out a trace. Confuse on were Peppermint Butler went Finn saw someone else over at the tent.
   He notes a hand sticking out of the tent door telling him to come in. With out second though Finn accepted the invite. As Finn enter the tent he looked around noticing clouds of incense everywhere, fancy pillows all around, Finn was amazed about how awesome and cool the tent was. All the sudden  Someone spoke; hmm about time you came my hero, there lying in a side lying position was Princess Bubblegum, dress in a beautiful and very sexy Bedlah dress. Finn blushes and drops his sword with a surprise look upon his face; Come to me brave dragon slayer and receive a heroes reward, Bubblegum Requested. Filled with temptation Finn walks up to her like if he's was in some sort of a trance. He sat down, still confuse on what is going on  Bubblegum put her finger on Finn's lips and told him; shuuu just relax now and enjoyed the show.     
As Finn lay there on a bed of pillows Princess Bubblegum began to perform a belly dance for our young hero. Entice by Bubblegum's alluring dance moves Finn could not take his eyes off her even for a sec, he begins to sweat as Bubblegum moves ever so closer to him. Finn grew nerves to the point were he could not moved as Bubblegum swings around her pelvis right in front of Finn's face. Bubblegum crouch down, straddling on top of our hero, leaning closer to Finn's face, then without warning Bubblegum threw of Finn's hat, grab him by the collar of his shirt, and kiss him mouth to mouth. 
As Bubblegum continues to swap saliva, Finn start to relax, letting go all his problems and worries. Wow you taste so sweet PB, Finn says to Bubblegum, hmm you must of like that seeing that your little friend back there is trying to get in between my buns, Princess Bubblegum  joyfully reply. As Princess Bubblegum reaches behind her back she asked the excited hero Now that you had a tasted my sweet lips, how would you like to try something more plump. Bubblegum unhooks her top and drops it on Finn's face. Finn removes the top from his face and saw with wide eyes, Princess Bubblegum fondling her breast, rubbing them back and forth, pushing and pulling them like if they were taffy.
 As Princess Bubblegum continued to joyfully fondle herself, Finn spoke to himself, whats going on. Why is it getting so heard to breathe in here, how come I’m getting all sweaty, and M mm whats going on with my hotdog it feels like its going to burst, and why whoa, is it me or is PB's boobs getting bigger. Finn could not look away from Bubblegum's chest as he was entice by the view Princess Bubblegum surrounded by incense while joyfully playing with her tits. Princess Bubblegum leans ever so closer over to Finn, as her breasts dangle over Finn's face Princess Bubblegum said; go on my hero taste the most plump and juiciest fruits in all of Ooo. Without second thought Finn grabs Princess Bubblegum's breasts and started sucking on them. Ooh yes yes that feels good, Princess Bubblegum joyfully cried out. As Finn continued to partake in drinking the sweet nectar of Princess Bubblegum's breast milk his dick began to expanded as though as it was ready to burst. Without warning Finn's dick poke Princess Bubblegum right in between  her buns, and with that Princess Bubblegum with a curious smile on her face knew that her Hero was ready for some real fun.
Princess Bubblegum, pulls away from Finn's breast feeding. Hey what up P.B., Finn strongly ask. As Princess Bubblegum kneel up she reply; For give me Finn but I thought you would wont to save room for dessert. She pulled away her skirt and revealed to Fin that this hold time she was not wearing any panties. Behold Finn the greatest treasure for only the greatest of heroes and its all yours, Princess Bubblegum said, Finn was titillated by the sight for Princess Bubblegum's honey hole. His heart beating faster then ever, sweating all over his body, and his face turn beef red. Finn could not find the right words to say as he just jabber on; Umm, umm, umm, Princess Bubblegum giggle to Finn's surprise,she took her right hand and rub on Finn'schest. just relax,she said  then took her other hand and grab Finn's penis. Whoa, Finn said, Pincess Bubblegum began stroking Finn's dick, firmly in her soft hands. Finn started to unwind after seeing Princess Bubblegum's honey hole for the first time. After finally surrendering to Princess Bubblegum's soothing hand job she proclaim to Finn as she continues to gently stroke him ; For so long you have fought many villains, slayed fierce monsters, protecting those who cannot fight for themselves,and all without any selfish desires. you have earned the title of “Ooo's greatest champion” and now is the time to release all that years of stress build up in you from your many battles. She kneels ever so closer down to Finn penis and said out loud; I welcome you Finn to paradise, as she thrust her pussy right on top of Finn's penis.
Ahhhhh, Bubblegum cheerfully cried out. She began to move her hips up and down, up and down on top of Finn. Finn could not believe nor understand the sensation he was feeling, his heart beat even faster then before, sweat running down all over Finn's body, faster PB move faster, Finn ask. As you wish my hero, Princess Bubblegum said. She moved her hips even faster but Finn wonted more, so he grab Bubblegum's thighs hopping to maker her move even faster. 
Hearing Bubblegum's sexy moaning Finn though to himself; thats odd, mmph... PB's Voice doesn’t like hers,-mmmph it sound more like -mmmph, But Finn lost his train of thought. PB, Finn said; I feel like I’m going to burst, Bubblegum replied; good then cum, -mmmph cum inside me. Release it all inside me she yield, and with that Finn pulled Bubblegum's pelvis down on to his and release inside her, screamed as they came. After Finn was finish filling   Bubblegum up she bend back with her hands at Finn's legs, panting with a smile on her face, then she said to Finn; I can still feel your dick twitching inside me.
Both Finn and Princess Bubblegum were exhausted from the intents sex.  Princess that was amazing Finn said, Princess Bubblegum giggled then she began to laugh. Finn was puzzled on what was so funny. Bubblegum swung her head over to Finn with her hair covering he face then suddenly is stop laughing. Finn ask Princess Bubblegum if she was ok but no response. She slowly lifted her hips up to pull Finn's penis out of her pussy. Bubblegum's pussy was dripping with cum. This feels goods, Princess Bubblegum quietly said. Finn was getting worried on what is going on with her. Princess Bubblegum grab Finn's Penis. Finn said to Bubblegum; o I don't think I'm ready for seconds yet. Bubblegum started to squeezing down on Finn's penis. Ow ow ow ow PB what are you doing that hurts Finn ask in pain, Princess Bubble eyes turned red, her teeth became sharp, then she replied in a scary voice; you’ve had your fun, now its my turn.
Finn woke up with a fright after what he saw. It was morning, the sun was rising, Finn looked around the room from his bed. Finn was bummed out that its was all just a dream. When Finn got out of his sleeping bag he notice there was a hole in the crotch of his PJ's and the sides of the hole was wet. Finn was confuse on how this happen, then he said out load to himself; was it really a dream if so, Then suddenly Finn hears Jake yelling;  Finn you awake I'm back. Jake has just return from his night with Lady Rainicorn carrying a bag of breakfast burritos with him. Finn replied back to Jake; yeah ill be right down . Moments later after getting dress Finn came down to the table and greeted jake a good morning. Jake gave Finn a Breakfast Burrito he got on the way back home. 
As both Finn and Jake was enjoying there Burritos Finn ask Jake on how was night with Lady. Jake replied; o it was great first we when to dinner, then we went to see the Spirit Waves show, after that we headed back to Lady's place were I surprise here with her favorite cake I made ahead of time. We were right there together by the candle light enjoying the cake. After we finish the cake we Ummm, and then what Finn ask, then Jake said; then we went to bed, yeah. We were both tired so we went to bed. Ok Finn said to Jake with a suspicious look. O by the way Jake said; this is for you. Jake gave Finn a letter that was address to him from Marceline. Finn open the letter and it reads; Hey Finn I like you to come over tonight around ten alone. If you bring anybody else I well kill them so see you tonight From: Marceline. After reading the letter Fin went back to eating his Burrito.