(Pronounced Cha-cha-ha-muh) A Mexican person who messes things up, usually with deadly consequences. This word can also be sung to mimic the Mariachi music they listen to. see also Pakalla
"Someone got crushed at the construction site yesterday. I guess that's what they get for hiring a Chachahamma to work the crane."
by Coates45 April 19, 2009

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