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A foot without a sock is a man who is constantly looking to have sex with someone. In other words, a man-slut. It is called being a foot without a sock becuase the man always needs something to stick himself in.
Dan: Man, it's weird that Steve has had sex with the hottest girl on the planet, and now hes going after

Sharon, and shes like a 4 out of 10!

Bob: Dude, hes just a foot without a sock.
by The Discussion September 17, 2010
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