Flap-Bag 

The flap of fat that hangs over the pant line of an obese person.

That lady has one huge flap-bag.

Check out the flap-bag on that person.

Flap-Bag by Drew Butner February 10, 2009

flap scrubbing 

Literally, manual female masturbation.
Or figuratively, wasting time, as in goofing off,
fucking off, or the feminine version of jerking off

She's obviously so horny it's interfering with her work. She needs to go home to scrub her flap.
Please take a break from your flap scrubbing and bring me a beer.

flap scrubbing by Shayman Bob June 7, 2011

Fapsize 

To masturbate so vigorously that one loses one's balance. A portmanteau of fap and capsize.

Man I was polishing the wedding tackle in the shower and just when i was about to chuck the muck I fapsized! Almost killed myself!

Fapsize by Vec September 19, 2012

Fapsphemy 

When you masturbate to something you think is sexy, but turns out to be a dud or ugly picture (say, a side-boob).

Hmm, that side-boob looks hot. Man, I feel like rubbing one out.

*Photo is actually picture of a fat guy's side-boob.
*Gasp* FAPSPHEMY!!!

Fapsphemy by Goldstar127 January 12, 2013

Fapsalad 

A faggot who is easy to and very funny. Has poor taste in stalkers that are currently unblocked.

I was on twitter last night and @Fapsalads followed me and we became instant best friends

Fapsalad by BongHitz4Jesus April 1, 2013

fapstorm 

When your internet slows down because everyone is coming home from work/school and watching porn in HD. Especially prominent on the islands of Hawaii where there is very few internet lines leading to mainland.

Guy1: "Why is the internet so slow all of the sudden?"
Guy2: "its the fapstorm man"

fapstorm by jteas December 12, 2017

Fapsent 

Consent or permission to fap over a nude or photo

God damn Erin, that's hot. Do I have fapsent or will this cost me another $600 PayPal transfer?

Fapsent by anonymous April 22, 2022