Top Definition
To be able to masturbate, 'fap', using both your left or right hand.
Person 1: It's so hard to choose whether to fap with my left or my right hand...
Person 2: You can use both???
Person 1: You can't?
Person 2: Dude, you're so lucky you're ambifaptrous.
by Lewicide September 15, 2009
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