Top Definition
To masturbate furiously. So hard, in fact, that it makes a wet "fap" noise repeatedly. the double "p" in this word is because it is the abbreviated version of "Fapping".
John: eww! what are you doing!!?
Jake: (fapfapfapfapfap) hey man! everybody fapps!
John: let go of my cat!
by DRAGON FORCE January 17, 2006
Force applied, often confused with masturbation
The Fapp on an object is 21 m/s
by Pseudanonamys July 09, 2015
A mobile phone application that is so good it makes you want to thrash your man baton repeatedly.
'Hey, what's that app like?'
'It's awesome! It's not just an app, it's a fapp!'
by EnterTheMurk July 20, 2010

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