fappin 

to masturbate
jack off
normally used for a guy
but girls can also use it

"i was busy last night"
" you were fappin!"

"brb"
"you were fappin"

naughty talk
fappin!

fappin by arielj December 5, 2007

Fappiness

The feeling of contentment after jerking off.

"Why's Brian grinning?"

"He's in a state of extreme fappiness."

Fappiness by Big D L May 22, 2008

FB Fapping 

The act of fapping to pictures of people on FaceBook. This is a form of FaceBook stalking in which the act of masturbation takes place.

Roger: Hey Eric, I give you permission to stalk and fap to anyone on my friend's list as you see fitting.

Eric: No I'm good, I'm above FB fapping

Later Roger walks into Eric's room not noticing the strange fapping sounds and sees Eric going to town to one of his FaceBook friend's profile pics.

FB Fapping by Schlong Daddy June 10, 2013

fappening 

A portmanteau of "happening" and "fap", the latter of which in turn is an onomatopoeia for masturbation. Popularized by the 2014 celebrity pictures hacking scandal, or "Celebgate".

The Fappening is the name that’s been given to the gigantic booty of sexts and other steamy photos that leaked all over the internet after first being posted on 4Chan earlier this weekend

fappening by AGC195 September 2, 2014

Fappercise 

When you replace normal every day exercise with fapping.

I make sure I fappercise at least 3 times a day, keeps me in the shape i'm in.

Fappercise by Anon-Siph June 21, 2010

Fappered Out 

Tired from fapping too much.

Boy 1: Why are you so tired today?
Boy 2: I'm all fappered out from last night!

Fappered Out by particulus May 16, 2011

mind fapping 

wasting valuable time watching stupid videos or porn on the internet when you should be doing something more constructive.

I was going to work on my paper, but I followed a link and before you know it, I was mind fapping for hours.

mind fapping by robisawesome August 31, 2011