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When two men resort to a form of physical contact due to their momentum.
Two guys walking towards each other in a crowd suddenly see each other and their momantum causes them to give an akward man hug instead of a handshake. This usually occurs with men who haven't seen each other recently but, could happen with strangers.

hughuggingmenmanhandshakefist bumpbumpcrowdwalkingmomentumhugged
by G0T_the_LIFE June 29, 2013
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