Being photo bombed

I preparing to shoot a busy downtown corner and a homeless guy photo bombed me (jumped in front of my camera), so I snapped. This is obviously not a planned shot, or a composed shot, and it's not even in focus, but there's just something about the whole photo that makes me chuckle (after being initially surprised). Does it work for anyone else or did you just have to be there?

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60 of my favorite shots from 2012: http://www.flickriver.com/photos/jayhawk/sets/72157630578089098/