Top definition
When a person attempts to reason a point they have with completely false evidence or something they had just made up.
Zack had a severe case of Whack Attack Syndrome when he wouldn't let us in his basement for no reason at all.

Jeff had W.A.S. when he said Matt didn't have a chance with Kelsey when Jeff didn't know anything.
by paka322 May 04, 2009
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