The Dane Cook of martial arts.
Bob: Watch out, I know karate.
When after watching the movie fight club, you begin to question whether your best friend is a real person, or an alter ego your mind has sub-conscientiously created.
Joe: (walks in) hey man, wanna play some Madden?
Dan: (points gun at himself)
Joe: Uh.. Dan.. why are you holding a gun to your head?
Dan: Not my head Joe, OUR head.
Joe: Uh-oh, Fight club syndrome.
When you like an average looking girl (girl A) with a hotter best friend (girl B) and you admit it to girl B and she tells you that girl A thinks of you as only a friend, but she (girl B) did like you, but now that she knows you have feelings for girl A, she wont go out with you.
I missed two birds with one stone, now I have an extreme case of blue balls.