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Fapadapt is the act of starting to mastrubate to a new kind of thing. It could be anything from teletubbies to hentai. When you start mastrubating to a thing, you have fapadapted it. Fapadapt originates from the words fap and adopt.
Person 1: I've fapadapted hentai!

Person 2: Dude that's freckin' weird!

Person 1: Not as weird as your face!
by Naughty thoughty March 14, 2011
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