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A badass who usually ends up making things worse for his comrades.

A man who has terrible coordination, but seems to have a good amount of common sense.
Stupid McButtface: "uhh, sir why is the self destruct sequence activating?"

Joe: (yelling) "CRUMCLUTZ!!!"
by Chief 117 September 22, 2010
A adjective for a person who is clusmy and extremely unlucky
Jeremy:Oh man poor Carmine getting sniped as he stood up poor guy
Adam:Yeah that was unlucky he's such a Crumclutz
by The cuttest Alien September 17, 2011