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!
by Dr. Ding Dong May 12, 2011
Get the Sam Witwicky mug.