J.D.: [v.o.] Some people say everything comes down to luck.
Turk: I need my lucky 'do-rag.
J.D.: [v.o.] What I believe is that the most minor event - even a butterfly flapping its wings - can affect everything.
Turk: Hillside landing.
J.D.: Because once that seemingly insignificant event happens...
Carla: What is wrong with you!?
Turk: Baby, I wasn't looking at her lovelies. Okay? I was looking at the butterfly that just happened to land on her lovelies. And who could blame it? There they are, all snuggly and safe and whatnot.
J.D.: It sets everything else in motion.