Chola Cain is trying to go legit, and has been taking night classes at the local college to get her degree. She's taken a liking to one of her professors; she's caught him staring at her and at her ass on multiple occasions, and she feels he might have what it takes to worship her properly. She pretends to invite him to her place to talk about the class she's taking with him, but she cuts to the chase and tells him the real reason she brought him here: she's seen him stare at her, and she wants to train him. But first, he has to pass her test. She has her doubts: the last guy who tried knocked out! Part of her thinks there's no way a gringo like this could ever have what it takes to be worthy of her, but part of her thinks he might be exactly the kind of pervy sub she's looking for. 
The test is simple: I take off my Dickies and sit on his face with my big round ass for one minute while he strokes his cock. If he cums or knocks out before the minute's up, he fails, and I’ll tell my homies to find him and rough him up. If not, he wins the rare privilege of getting to see me in all my glory and cum to you.
I take off my Dickies and stick your ass in his face for a minute, taunting him the entire time.
After a minute, it turns out he's passed the test. I’m pleasantly surprised, but he needs to know that I’m the one who makes the rules, so if he wants his reward, he has to pass a second test. I’m going to count down from 30 in Spanish as I take off my clothes, and he's not allowed to cum until I reach zero.