The act of masturbating and then ejaculating on another's back.
That crazy bum just gave my little sister a Wooly Willy!
מאת Twice Nightly 14 בינואר, 2013
Like a tea bag, to stick your saggin balls on someones face while they are sleeping, but shave you balls while doing it, and arrange the pubes into the shape of a Moustache or Beard
Look, I Wooly Willy'd Ian, and now he has a beard.
מאת Addiary 16 ביולי, 2010