at least put the quote here, you Lazy Frink! I had to look for it!
Lisa: What is the sound of one hand clapping?
Bart: Piece of cake. [claps with one hand]
Lisa: No, Bart, it's a 3000-year-old riddle with no anwer.
It's supposed to clear your mind of conscious thought.
Bart: No answer? Lisa, listen up! [claps with one hand]
bonus clips
http://www.youtube.com/watch?v=h91Su1sUng8
http://www.youtube.com/watch?v=iPjBf9i0VPY