Do some sexperiments in the lab

The only locations you know on campus are the dorms, the food halls, and the girls' lockers at the sportsplex, since you very rarely attend an actual class. You do spot a familiar babe, though, who you happen to know is a chemistry major. Her name is Quinn, and though she's a skinny little babe, she's got fat dick-sucking lips. You follow her to her next class, watching her jeans grip her tight little ass until you almost run into her while she's holding the classroom door open for you.

The class is lead by a tall woman in a lab coat, shaped like a barbie doll. Her hair is up in a tight bun and she's scribbling a formula on the board. "Now that the last students are here, we can begin. Quinn, David, please take your seats."

"Of course, Dr. Curruthers," mumbles Quinn.

You reply differently, since you don't give a fuck about anything. "Take your clothes off while you teach, Dr. Cumdruthers."

"Ugh, okay, David, but take your seat," she says, indicating the spot next to Quinn at the last lab table. The bombshell teacher hangs her lab coat on a rack and resumes chalking up her formulas. "So as you can see, there will be a common theme to today's experiments." She pauses, expecting something, and begins to unbutton her tight wool sweater. "Can anyone see the theme?"

A few students are jotting notes and calculations, some are watching their very hot teacher slowly strip her clothes off, but most are just stumped. You're also watching the teacher, and stumped. Quinn, beside you is mumbling to herself.

The sweater's last button is undone, and her big d cup bra practically bursts forth from the wool as she frowns at the class and says, "Walk me through it, class..."

"It's not the catalyst," says a sorority girl with reading glasses, sitting in the back. "Formula B doesn't even use heat."

"Heat is not a catalyst, Miss Gurglehaus, but you're right, it's neither a common catalyst nor the temperatures of the reactions..." she continues to frown at the class as she shrugs her sweater off over her shoulders. "Quinn, do you have any theories to share?"

"I just categorized these formulas a few ways, like by the atomic weight of their products or by potential reactions with human skin, eyes, digestive systems... but Dr. Curruthers I'm sorry I can find no commonality."

"Well you're all looking in the wrong places!" The shirtless professors turns her back to you and walks to the chalkboard, wiggling her way out of her tight pencil skirt as she does it. Slapping a telescoping pointer stick against the formulas on the board, one after the other, she says "The common! Theme! Is! In the reagents!"

"Oh, I see!" shouts Quinn from her stool next to you. She pulls her plastic safety goggles on over her hair. "Every one of these formulas uses David's seminal fluid!"

"That's right, Quinn. I'm glad someone is paying attention", says Dr. Curruthers as she unclasps her bra in the back and lets it fall to the floor, her big, round titties swinging free. "Now everyone get to work. I want to see full logs, clean workstations, and testable products in thirty minutes!"

Quinn jumps to life at your side and says, "we can't waste any time, David. If we're going to get an A today, we need your jizz in this beaker right away!"