It was Gloria, the African-American girl from History class.
"Of course!" Amy smiled, "What's up though? Is your brother home sick?"
"Yeah," Gloria nodded, "He's got a bad case of dick flu. Can't get it up, deflated balls, and his skin's losing its color. He's stayin' home so he can like, recover and stuff."
"Oh em gee!" Amy gasped, "That's terrible! I hope Vern gets better, he's like super yummy!"
"He'll be okay," Gloria reassured, "He just needs to rest and like, have some soup or something."
You briefly ponder what sickness must mean for this society. How serious are their ailments? Is it literally just common bugs like the flu or is cancer still a thing? Are there still doctors in this world, or at the very least nurses? If there are, how good at their jobs are they?
Gloria carried you over to her desk, cupping your balls in her warm, manicured hands. She licked her ample lips as the stared licentiously at your head. You decided those questions would have to be put on hold for the time being. Right now you've gotta perform a duty for this luscious woman. You felt your shaft harden up right away, standing to attention.
"Hoo! Someone's eager to please," Gloria giggled, "Or are you eager to get pleased? I know I'm eager! I don't do it with white dicks often, so I'm excited to see how you feel." She set you down on her chair this time, squatting down so that she was eye level with you. What was she going to do with you first? "Let's get you lubed up first, big boy!"
Gloria started licking you up and down like a meaty popsicle, coating you in her thick, chocolate scented saliva. The feeling of the cold air against your wet skin coupled with the sensual sensation of her tongue sent shivers through your nerves and made your balls feel tingly.
"Mmm, I think that's enough lube," Gloria grinned, "Ready for the real fun part?" She held onto the back of the chair as she hovered her ample ass over your head. As she squatted down, you felt yourself get enveloped by her anus, swallowed almost whole by her bodacious booty. She slowly pushed herself back upwards before slamming back down on you again. All you could see around you was darkness, and the smell of chocolate was overpowering to the point of nauseating. You could feel the walls of her anal cavity pressed tightly against you as you pounded her posterior. This went on for a couple minutes before you felt fit to burst, but before you could blow your load you felt Gloria clench her cheeks and lift you off of her chair. She grasped you by the balls and pulled you out like a sword from its sheath, and pointed you at her measuring beaker just as the walls of your dam burst. You blew a load large enough to overflow the beaker, four whole cups of cum. You wished you could pant and catch your breath.
"Damn, you felt good (Your Name)," Gloria moaned lustfully, "And look at how much you busted! I can't wait to get a taste of this!" She brought the beaker to her lips and sipped the thick goo like a teacup. She licked her lips, grinning as she tipped the beaker and drank half of it down. Droplets of your cum dribbled down her cheeks and splattered against her bountiful breasts. You felt your vigor and vitality return to you at the sight of it.
When the bell rang, Amy scooped you back up into her cleavage and said goodbye to Gloria, who thanked her again for letting her borrow you.
"Did you enjoy Gloria's ass, (Your Name)?" Amy asked you happily, "You looked like you did! You filled her beaker all the way up! Maybe I should try anal with you sometime." You tried to inquire about the compound you were helping make, but again all you could do was splurt all over your sister's face. "Hee hee~! We were making aphrodisiac, silly! Weren't you paying attention in class yesterday? It still needs to brew overnight, but tomorrow Ms. Likesanal is gonna let us take some home."