Top Definition
When you are at a party/gathering/school/any situation you are interacting with other people, and someone insults you and you just stand there and can't think of anything to say back, but then when you walk away you think of the perfect comeback.
Person A: *Insults person B*
Person B: Pathetically stands there trying to say something then walks away.
Person B:(while walking away) *Thinks shit, now i know what i should have said, stupid Stairwell Effect*
by gahe July 10, 2009
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