Like racial profiling, except one is sizing up a the size of a man's penis by the way he acts. In this case, race does not make a difference!
Big sister- Check out
that cute guy at the end of the bar!
Lil sister- Yeah he's cute, but he's a cocky somebody!
Big sister- So what's that got to do with it?
Lil sister- That means he's probably got a little penis!
Big sister- Oh you're just penis profiling!