It's kinda a no-no matter, but have you ever asked yourself what it would feel like to be a professor in an all-girl university? Just think of teaching a room full of 18 year old graduates, bored senseless and desperate for sex. You've been careful all year long, avoided indiscreet eye contact and never entered their personal body space.
Of course, this doesn't mean you haven't been thinking about it. The loveliest coeds know full well they're capable of playing men like a game of pool - and why not try it out on their instructor? It's a good opportunity for them to train their seducing skills. They can have at it all day every day!
So they do stuff like showing their titties to the lecturer and arriving in short skirts. You have college girls who like competing with their girlfriends and won't hesitate to go all the way. So you get increasingly delectable situations, like being confronted with completely naked young twat when turning to address the class. Take it from me, there's not a single schoolteacher, teacher, professor or tutor on this continent who hasn't been in this position. Surely gets the hairs in the back of your neck stand up.
They will beg for a 1 on 1 coaching session, grab his cock right there and screw him in every way imaginable. All this clowning and joking aside though, a couple of these schoolgirls in fact do get infatuated with their instructors. They will stop at nothing to get them to drop their guard and make their move. Their little outfits and random rubs in the gym are only the onset. Fuck, they'll try and get their poor teacher squealing for more when they're finished! The old fart hardly had a chance. That is to say, assuming he ever felt the inclination to refuse in the first place, obviously.