1 definition by cocosforreals

A line or phrase that is either purposely used to end a conversation with someone as soon as possible, or a comment that unwittingly ends a conversation.
Tony: Ey man, whats up!
Simon: Nothing.
Tony: What you been up to today?
Simon: Not much.
Tony: Such a conversation killer...

or

Joe: The new CD is so good!
Mark: Yeah, tell me about, it's great!
Lisa: I totally agree with you guys.
Tim: I bought a new shirt today!
Joe: ...
Mark: ...
Lisa: Nice conversation killer!
by cocosforreals July 11, 2008
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