1 definition by Jonahk

Top Definition
Verb: A slang spelling of the two words "Have to"

In genral, it used as a way of saying "Of course! Have to"
Person 1:Bro, are you coming out with the boys tonight ?
Person 2: Hafftoo!
Person 1: Sweet! thats us!
by Jonahk October 21, 2013

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