Patrick recalling a memory..on moms.
Patrick: Who the hell would call their mom a b*tch?
His friend: OH! My mom's a B*TCH!
Patrick: [out of pure curiosity he goes] So...wouldn't that make you a son of a b*tch(?)
A Good Start: http://www.youtube.com/watch?v=eXZB-n8GIfQ http://youtu.be/kRkgDwHPJg8