"Bzzzt, wrong" is popular expression, used often on the internet, expressing disagreement. Punctuation varies. It is a reference to a Robin Williams routine in the movie Dead Poets Society, which itself spoofs radio and TV quiz programs (such as Truth or Consequences) where an incorrect answer earns one a blast from the buzzer and condolences from the interlocutor.

A way of expressing mock-rude disagreement, usually immediately following an included quote from another poster. The less abbreviated "*Bzzzzt*, wrong, but thank you for playing" is also common; capitalization and emphasis of the buzzer sound varies.

This definition is from the Jargon File, version 4.3.1. It is also in FOLDOC, the Free Online Dictionary of Computing, and is used by permission.