Doggie Style

"Well..." you think. "there are some things that most girls don't like that the really wild ones seem to enjoy..."

Raising her eyebrow, Velma folds her arms in front of her. "Well, I can think of a lot of things that most girls don't like. I'm afraid you will have to provide more data than that."

Smiling wryly, you step forward and grab the bottom of her sweater. You start to it pull up. Immediately you see that her hips do curve into a pleasantly slimmer waist, previously hidden by the bulky sweater.

Velma unbuckles your belt and lets your pants drop to the floor.

Higher the sweater goes, revealing a pair of unfettered D-cup breasts swaying freely as the fall out of the grip of the garment. Gently you pull the sweater up over her head and around her glasses, finally letting it fall to the floor. Grabbing the waistband of your underwear, Velma kneels down and pull them to the floor as you step out of them.

"Jinkies, that's quite a specimen you have there!" she gasps. She takes your cock in both hands and begins to rub it gently, feeling the length and girth of your member. Your tool rapidly hardens as she strokes your cock with her small soft hands. Pulling her back up, you lead her over to your desk and turn her around. Stepping up behind her, you admire her full round ass. You caress her bottom with your hand for a moment, feeling her creamy smooth skin. You lean forward, resting your cock between her ass cheeks as you reach around and grope her heavy tits. She moans slightly as you tweak her nipples with your fingers. Pulling away slightly, you 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."

Pushing her forward over the desk, you grab your cock and 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 cries out.

"Please...." she begs. "please fuck me. I can't stand it, I need to feel you in me."

You continue to tease her, grinding your cock against her clit from behind without actually placing your dick in her hungry cunt.

"Aaaaaaaaaah!" She cries out in frustration. "FUCK ME!"

Moving your dick up slightly, you rest the tip of your cock at the entrance of her tight little asshole. Looking back at you with her eyes wide, she gasps slightly in anticipation of your next move. "Wait, I've never..." she begs.

You slowly 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.

"NOOOOOOO!" she cries out. The hot walls of her ass gripped your prick like a vice. "Aaaaaaaggggh!"

You continue to push in to Velma's tight little ass, pausing to slowly fuck her for a few moments after every inch you fit in. Soon, Velma's cries of pain and horror turn into low growls and moans of lust.

"OOOOOOOOOOOOHHHHH". She moans.

You are about halfway in when Velma takes matters into her own hands and pushes her body back against yours once again, driving your shaft into her to the hilt. "Uuuuuuunnnnnggggg!" she cries.

You slowly start to thrust in and out of her ass, caressing you voluptuous curves of her hips with your hands. The cheap desk creaks with each thrust, Velma's brown bobbed hair swaying back and forth. She arches her back and stands 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 you continue to pump her from behind.

Grabbing her waist, you begin to increase you pace, forcing her to lean back over the desk once again. Now the cheap student desk was slamming against the wall with each thrust, some pens and computer discs falling to the floor as you pummel Velma's ass from behind. Grabbing hold of her skirt, you push her forward against the desk with a thrust of your cock, lean back and then pull her body towards you by the skirt, slamming her ass back on to your dick.

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

You feel yourself ready to cum. To Velma's surprise, you pull out. Grabbing her by the shoulder, you spin her about and quickly push her down to her knees before you. Grabbing her head with both hands, you point your throbbing prick towards her mouth as her eyes go wide.

"Open your mouth!" You demand.

Hesitating for a moment, a single tear rolls down Velma's check. Regardless, she complies and devours your cock 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 as she grimaces from the taste in her mouth.

"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. You slowly get dressed yourself as you watch her get ready to depart.

"Well, thanks for the change in pace." She offers. "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 small spot of cum on her chin.

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.