Randomly shouting out "DAS IST WORTWANG" at things people say is a great way to amuse yourself and confuse and/or iritate them! You can have specific trip-words or be as random as you want.
Wortwang would be the german version of "Wordwang" a spin-off from "Numberwang" (German version: Nümberwang). These all appeared on the British comedy sketch show 'That Mitchell and Webb Look'. Wortwang itself was never used on the show but that makes it even more baffling and original! I could imagine it being used on Scrubs as popularity spreads!
"Do we need any more potatoes?"
"Das ist Wortwang!"