In walks the perfect test subject

Your total enrapture with you new world changing invention is all of a sudden completely shattered when you hear the door open. You quickly jerk yourself back to the real world and see standing in the doorway looking confused to be the beautiful face and wonderfully sculpted body of Kelly McManus

You recognize Kelly from one of the lower level chemistry classes that you are TA for. She's always been your primary eye candy, but she's never spoken to you and she's way out of your league. You know she has no interest in chemistry and she's just taking it as a core requirement. She's really a dancer and it shows. She is tall, taller than you in fact with long raven black hair, big blue eyes, and that sexy long nose (what is it about distinctive noses you've always been attracted to?). Besides that, her body is nothing short of stellar with a pair of long long dancers legs, conveniently shown bare thanks to a pair of short gray gym shorts which also show off the figure of her finely toned and firm ass. And of course there's those lovely big breasts which must be at least D cups that are barely contained by her small pink t-shirt with the name of her sorority Delta Delta Sigma on it.

“Uh... hi” she says rather awkwardly, and you wonder what you must have looked like holding a beaker of clear liquid looking at it like you wanted to fuck it. “Your the TA right? I was in here for Lab hours earlier today and I think I must have left my backpack in here.”

You quickly scan the room and notice a small pink backpack over in the corner that you hadn't noticed before. “Oh yeah there it is.” you say trying to sound calm.

“Thanks” she replies. As she strolls over to the corner of the room to retrieve her backpack, you take the opportunity to examine her fine ass as it wiggles up and down while she walks. To your **** happiness she has to bend all the way over to pick up the back pack giving you the view you'd been hoping for, but then suddenly you snap out of your delirious dream world and realize that while your starring at her ass, your letting the perfect test subject for your newest invention pass you by. Quickly you formulate a plan.

“Hey, your Kelly right?” you ask. “Kelly McManus? Your in the Tuesday, Thursday class at noon?”

“Yeah.” she says continuing to walk toward the exit. She doesn't seem interested in staying to chat.

“You know your not doing very well in class right?” you say. This stops her and causes her to give you a searching look. “I've graded a few of your assignments.” you explain.

“Yeah so what?” Clearly this is a source of frustration for her.

“I just thought I might be able to help you out with some extra credit.”

At this her expression changes to one of skepticism. “What would I have to do for it?” she asks. Clearly she knows what's on your mind. You theorize that she must've noticed you checking her out in class once or twice.

“Just participate in a field research test.” you say. “It'll only take you a second. I'll ask you two questions and then you can leave.”

Kelly looks at the beaker your holding, then at you, then around the room as if the answer might be written on the wall somewhere. Then she shrugs her shoulders and says “Okay.” before walking over to you and dropping her backpack on the floor.

You hold up the beaker to her and ask her to smell it and tell you what she thinks. She does and says that she can't smell anything. “Good.” you say. “That just means that the substance needs to make contact with the natural oils that are found in human skin in order for it's true effect to take place.” The look she gives you seems to convey a feeling of whatever. With that, you dip you index finger into the liquid. Immediately you can feel a tingling sensation where your finger makes contact with the liquid and know it must be taking effect. You lift your finger out for her to sniff.

Her reaction is instantaneous. You don't even get a chance to ask her what she smells before her expression completely changes from one of skepticism to one of complete awe. She looks up at you and you can see in her big blue eyes the pure carnal desire that the formula has instilled in her. She grabs your hand by the wrist and slowly moves it closer to her face, looking back and forth between your finger and you. Once she's got your finger right in front of her face she opens her mouth just long enough to say “Well that smells... different.” and then without any more hesitation she sticks her tongue out and and licks your entire index finger from knuckle to tip and then immediately comes all the way down on it engulfing it in her mouth and starts sucking it like a cock.

You grin as you think to yourself “Well I guess it works.”