Top definition
The ability to masturbate with either hand. Alternatively, the ability to switch hit in the five knuckle shuffle.
Guy 1: I burned my right hand pretty bad yesterday.
Guy 2: That sucks man, guess you won't be spanking it for a while.
Guy 1: Nah dude, I can still do it with my left hand. I'm ambifapstrous.
by Rhiever June 27, 2009
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2
The ability to masturbate with both hands.
"So, John, which arm do you use to fap?"
"Both, I'm ambifapstrous"
by Trevor89 August 04, 2015
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