German joke
An exceptionally good (or bad) pun which would make an American groan. This MUST be delivered with a perfectly straight face. It is considered an art form, called "Wortspiel" in Germany.
Person A -- Did you hear about the guy who drove his car into a tree to find out how a Mercedes bends?
Person Q -- *GROAN* Damn your German joke!
Person Q -- *GROAN* Damn your German joke!