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.
by Lattimer July 01, 2012