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Mafo, originally an abbreviated version of motherfucker similar to mofo, is now defined as a careless or clumsy person.

Mafo can also be used as a verb 'to maf (it)' in various tenses as well as an adjective.
"Man, that guy is always burning toast. What a mafo!"
"Man that guy really maffed it. It smells like burnt toast in here."
"Yeah, that was a real mafo move."
by EastBayDroogy November 10, 2013
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