Well let's see...
If you identify as something like oh...I don't know...a nerd, yeah? And then you do something like play a game of football and discover that WOW it's fun, and then someone says "you're totally a jock, NOT a nerd" how would you feel? How would you feel if lots of people started saying it?
That word...I'm at the office and not supposed to laugh like this...
If we go for the typical approach and treat the 'nerd' as someone who, chances are, has no connection to sport. You play a game of football, and either enjoy it or don't. Chances are, you don't. If the nerd enjoys the sport, he'll probably look into playing some more football. Look into other sports.
And now he's a nerd jock. Or a bisexual.
See? I can do this thing too.
These terms merely exist for easier indication on ones preference but for some reason, you think gay, straight or bisexual is a pejorative term. If this so called power over a person by giving a blowjob only exists for him when he gives a blowjob, it pretty much sounds like he's attracted to blowing dicks, where I would call his sexual preference bisexual since he still feels attracted to the female gender. The whole spanking and playing 'the naughty boy' in the act doesn't seem to change that fact.