In The Chair

"I've got just the thing to clinch this investigation..." Velma grins. She turns your desk chair around to face you and points. "Sit."

Taking your place as directed, Velma kneels down between your legs and takes your cock in both hands, licking and coating your cock with her saliva. After a few moments to ensure your prick is sufficiently lubed up, she stands up and turns her back to you, slowly lowering her ass towards your hungry prick.

Smiling you admire her full round ass. You caress her bottom with your hand for a moment, feeling her creamy smooth skin. You start to gently knead the flesh of her cheeks, feeling the heat building between her legs with your fingers.

"Hit me..." Velma demands.

You pause a moment to slap her ass hard with your hand.

"Ooooh." Velma moans. You smack her ass again, a little harder, leaving an angry red imprint of your hand on her backside. "Ooooooh."

Grabbing your cock, you gently press it between her legs and rub it up and down the length of her sopping wet cunt, spreading her juices all over your member to provide extra lubrication. Velma begins to squirm as you relentlessly tease the clue finder with your thick pole. Finally able to take no more, Velma re-positions her hips slightly and slams back down on top of you, pulling your cock deep into her slippery hot cunt. "Aaaaaaaaaah!" She cries out as you spear her with your tool. As she prepares to slam back into you again, you grab her hips to push her up and pull out.

"Tsk, tsk, tsk... you failed to properly follow the clues to their logical conclusion, Velma. The experiment is to determine how wild nerd girls are... there is nothing wild about fucking a woman's pussy." Moving your dick up slightly, you rest the tip of your cock at the entrance of her tight little asshole. "Your ass, however, would be a suitable test environment."

Looking back at you with her eyes wide, she gasps slightly in anticipation of your next move. "Fuck my cunt, fuck my mouth, fuck my ass... I don't care, JUST FUCK ME!" she begs.

You slowly pull her down and push the head of your cock into her ass. The combination of her saliva and pussy juices allowing you to ease your dick in despite the extremely tight fit. The hot walls of her ass gripped your prick like a vice. You are about halfway in when Velma takes matters into her own hands and slams her body back down against yours once again, driving your shaft into her to the hilt. "Uuuuuuunnnnnggggg!" she cries.

She slowly start to move up and down, moving your cock in and out of her ass while you caress the voluptuous curves of her hips with your hands. The cheap chair creaks with each thrust, Velma's brown bobbed hair swaying back and forth. She arches her back and sits up slightly, increasing the tightness of her ass and brushing her soft hair against your chest. You respond by reaching around and fondling her huge swaying breasts, kneading them in your hands as she continues to ride your dick.

Leaning forward, she begins to increase her pace, bouncing up and down on your member with wild abandon. Grabbing hold of her skirt, you pull her down forcefully to meet each thrust of your cock.

"FUCK MEEEEEEEEE!" she cries out as your pounding reaches a frantic pace. "FUUUUUUUCK MEEEEEEEEE"

You feel yourself ready to cum. Sensing your impending release, Velma cries out. "Wait!" Pulling your cock out of her ass, Velma spins around and drops to her knees in front of you. Before you can realize what she has in mind, she grabs your throbbing prick and devours it with her mouth, sucking and licking hungrily despite the fact that it just came from her ass.

The sight of the mystery solver going ass-to-mouth combined with her tongue flicking about your head pushes you over the edge as you send wave after wave of cum down her throat, which she dutifully swallows. As you finish, you slowly pull your softening member out of her mouth as she begins to stand up.

"Test complete, analysis?" she asks.

"Definitely the best head I've ever had... no question there. I've never had a girl go ass to mouth..." you respond.

"Good." She says as she stands up. "Hypothesis confirmed." Velma begins to go about getting dressed as if nothing had happened, like it was the conclusion of any other experiment. You slowly get dressed yourself as you watch her get ready to depart.

"Well, thanks for the fun." She smiles. "It was a nice break from watching Daphne getting all the cock all the time. If you can think of any more 'experiments' you need my assistance with, you know where to find me." With that, she jumped back into the poster, her body resuming the cartoonish appearance as she transferred from your world back into hers. Once again, she was in the poster picture, but this time, she had a devilish grin on her face.

Spent, you toss yourself onto your bed and drift off to sleep, replaying your encounter with the mystery solver in your head, thinking of what your next "hypothesis" would be.