Robin loved getting up a tight hot ass, but not like this. Hot, sticky flesh throbbed around him, pushing him further into Megan’s alien body. The slimy rectal flesh massaged every inch of him, squishing his tiny body as it traveled up. He hated it. He felt weak and helpless as he was controlled by the anal twitches from a girl he had fucked a moment ago. He tried to fight against the contractions, pull himself out before he went any further, but his attempts at escape only made Megan moan and his prison vibrate around him. He screamed for help, but anal mucus got into his mouth and he kept his mouth closed from then on. Further into the darkness, Robin wondered how much deeper Megan could take him.

Miss Martian shifted her huge bulk on the bed causing more of it to buckle under her tremendous weight. It took her several tried, but she managed to sit up. She stared down at her huge belly and gingerly rubbed it, smiling dreamily as she searched for a certain bulge. “I know it would be easier to find him if I was thinner, but I’ve really grown to like this body. It’s got so much padding,” Miss Martian cheerfully said to herself. She found a hard bulge among the layers of green flab and squeezed it, groaning as she felt her meal struggle inside her. Closing her eyes, she focused on pulling him out the hard way.

“What the HHHHHHEEEEEEELLLLLLL!!!” Robin screamed as he was suddenly propelled forward. He speed through the dark, slimy tunnel, going around curves without slowly down at all. He was like someone had shot him out of a canon, he just flew forward, never stopping. Muscles pushed him along, soaking wet to lube him on his journey. If he wasn’t used to rough treatment from being Batman’s sidekick he would have started puking.

“Yes! Yes!! YES!!!” Megan screamed out, her voice growing louder as she felt her meal take the express route out of her. It was like she was getting fucked hard as she felt Robin shoot through her. She gasped and moaned, her pussy squirting juices as she came multiple times. This was real Martian sex and she loved it.

After several minutes of being pushed through the most disgusting water slide imaginable, Robin was thrown into an open spaced inside Miss Martian, where thick liquid was sloshing around. Robin lay in the chamber, realizing he was in her stomach just in time to be sucked up and taken into her throat. Once more in a dark, wet tunnel, Robin moved up until his head popped out and he found himself staring out of Miss Martian’s mouth. His chin rested on her tongue and her white teeth bordered his sight. He had this strange view for only a few seconds before he was spit out right into her lap. He landed with a splat, covered head to toe in alien slime.

“That was so awesome!” Miss Martian exclaimed with a gasp. She licked her lips happily, tasting her own slimes. Robin just lay in her lap, trembling and traumatized after his strange journey from asshole to mouth through his lover. He need a shower, a long, long shower with lots of soap. He could feel the slime in every crevice of his body, some parts he didn’t even let girl’s touch. He tried to crawl off Miss Martian’s lap, but before he could get far, she lifted him up by his armpits. Carried to her face, she beamed at him as he kept his head low and groaned.

“You were fantastic Robin. You moved around so much, I almost thought you wanted to escape.” Robin groaned loudly, but Megan ignored anything he might have been trying to say. Her chubby face turned a darker shade of green as she felt excited again. “Time for round two!”

Before Robin could tell her to wait or scream for mercy, Miss Martian opened her mouth wide. Robin’s eyes went huge as he saw Megan’s mouth get even bigger. Her mouth hung open wide enough that a watermelon could fit, but no fruit was crammed in, rather a human head. Megan shoved Robin’s whole head into her mouth along with his shoulders, her lips coming down just above his chest. Moaning softly, she licked and sucked on the boy, her eyes rolling back into her skull in pleasure.

“Help,” Robin gasped out as his face was slobbered on. Drool flew everywhere as Megan moved her tongue and suckled on his head. Her soft tongue which had been heavenly on his erection slathered his face with drool and then pulled him forward, The top of his head pushed into the throat from which it had come. Taking a deep breath, Robin was once more sliding into a tight, slimy tunnel. Being introduced into the dark passageway become no easier this time.

Megan greedily slurped down Robin, groping his body with her chubby fingers as she forced him down her throat. Slime dripped from her lips as she sucked on his body, molesting him with her tongue as more was fed into her hungry maw. His chest slid over her tongue and down her throat as her lips wrapped around his waist. His cock dangled in the air, limp as a noodle. Miss Martian slurped that in only licking at it as much as any other part of his body before swallowing it. With his legs hanging from her mouth, Megan threw her head back and swallowed hard. Robin’s struggling legs kicked as they went down, moving as a single bulge down her throat to her stomach. As Robin once more emptied into her stomach, Megan’s mouth was free to let out a scream as she came again, adding to the mess on the bed. Groaning, she smacked her belly, making it wobble around and shake up Robin.