Jed Fu
This is the way to act like the Joker. When he is confusing people during the Dark Knight. It's actually a persuasive technique called incongruity.

The action of turning an argument on it's side and confusing your opponent by throwing them off with something clever.
You just stole $20. Retort using Jed Fu - Hey what happens if you eat a frozen coke and have Chron's disease.