Diamond Kitty fucks student to keep his mouth shut

Diamond Kitty needs some stress relief so she goes to her car to rub on her pussy for a bit. While she's going to town, one of her student's catches her in the act, so Diamond invites him over to her place. She needs to make sure that he keeps his mouth shut or she can lose her job. She makes a little deal with her student, if he promises to keep his lips sealed about her car shenanigans then she will keep her lips wrapped around his member.