How about Pesci and Deniro in Raging Bull 1980.
The scene where Deniro is begging his brother (Pesci) to hit him in the face.
Pesci keeps telling him he won't and Deniro tells Pesci to hit him in the face.
When Pesci does hit him, Deniro says do it again........ then Deniro tells him that he punches like he takes it in the ass. LOL!!!!!! WAY TOO FUNNY!!!!!