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1.
(n) the practice of observing humans on the sidelines of a club, bar, or the like. One might participate in Wall Watching for:
a) educational reasons, b) a recreational activity, c) comedic relief, or d) by default, physical exhaustion.

see also, Wall Watch (v)
Bobby: Look at those moves! I wish I had my camera.
Tommy: Wow, I've never seen one of those before. I can't believe I'm witnessing such an amazing event.
Johnny: What are you guys doing by the wall?
Bobby + Tommy: Wall Watching.
by Stephanie Cooper September 15, 2009