Sam Witwicky
The sexual act of a male ejaculating on a females stomach, then drawing random symbols as fast as he can before the sperm dries up.
Man#1: Dude, I just pulled out of her and blew all over her stomach.
Man#2: Did you Sam Witwicky her?
Man#1: You know it!
Man#2: Did you Sam Witwicky her?
Man#1: You know it!