On Facebook, one who obsessively reads people's wall posts because they have no life of their own
Friend 1: OMG, i think something's going on between Jenny and Ben!

Friend 2: How do you know?

Friend 1: Just been checking out their wall-to-wall conversation!! You should really see it.

Friend 2: You are such a wall creeper, get a life.
by KiKi98239234 February 28, 2009
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If you piss him off, Wall Creeper will fuck you up! This may include your reputation, personal life, status, etc
by Executrix December 15, 2009
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