When fucking a girl doggy style you randomly yell WHOS THE BOSS and then when she has a weird look on her face you donkey punch her in the face and yell TONY DANZA!
aight sometimes when a girls giving you head she'll ask you to let her know when you're gonna cum so you dont cum in her mouth. well a danza dunk is when you're about to blow it and you hold her head down while yelling "Who's the boss?!"