I have a couple
JV basketball practice after getting blown out the night before.
Coach P "you guys stink worse than my first shit in the morning"
Varsity Basketball after any mental error.
Coach K "you mental pygmy" his take on mental midget
Coach K to a football player at halftime getting abused by a D-lineman. "you 6'4" pussy"
This was many eons ago, I doubt coaches talk like this anymore.