If someone you knew slapped you on the behind by accident, what would you do?

Someone did it by accident trying to get a girl's purse, and the girl didn't even mad at lol.

Cuss them out
Punch them
If I like them let it slide, if I don't, give them hell
Nothing
Select gender and age to cast your vote:
If someone you knew slapped you on the behind by accident, what would you do?
Post Opinion