when a male is ready to ejaculate while doin it doggie style, he asks,"who's the boss?" Thereafter he gives his bitch a donkey punch and says,"tony fuckin danza!"

When you are having sex, you ask the girl "Who's the boss?" and when she says your name, you respond "No bitch, Tony Danza's the boss!" and give her the donkey punch.

v. "to who's the boss" or simply "to boss" something: the act of throwing an object that was a vessel for alcohol after it has been consumed at a stationary object until it breaks. Breaking something after a triumphant drinking session. Always ended with saying "who's the boss". Usually plastic for safety purposes. also known as bossing.
n. Who's the boss: the actual action of who's the bossing things.

to elaborate on the given definition, it is my understanding that afterwards (after the donkey punch), the male forcefully inserts his crotch rocket, and by that i mean stiffy, and by that i mean erection, into the unwilling ass of his partner. Perhaps she is willing, but it's not as fun that way.