When someone, i.e. a man, has a big beard very similar to the pitcher Brian Wilson and he uses his man beard on a girls clitoris in a vigorous up and down or side to side motion for an extended period of time till she gets off. That said girl has now become "Brian Wilson-ed".
Man, I 'Brian Wilson-ed' a girl last night and she got off so much that my beard turned white.
The action at which someone screws you over on purpose out of pure jealousy and anger
Guy number 1: *Catches the biggest fish of the trip
Guy number 2: Here let me net it for you *Purposely Knocks the fish of the hook and looses your fish*
Guy number 1: You just Brian Wilson-ed me!