The act of masturbating before making a tough/thoughtful decision.

A portmanteau of "fap" (slang term for masturbation) and the phrase "sleep on it" (think about something in the night and morning).
Mike: Should I ask Jennie out? She's really hot.
Jim: Fap-on-it man.
*an hour later*
Jim: So?
Mike: Nah, I like blondes.
by Deathinetly August 2, 2011
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1. Dude I was fapping to a porn video last night

2. He is fapping cuz he got no one to give him a handjob
by Smart Omlette August 5, 2021
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When one is on the fence about an important decision, instead of "sitting on it" they "fap on it" (jerk it, rub one out, a good wank, etc.) then revisit the issue at hand with a much clearer mind and thought process. Usually pertains to issues involving bitches and hoes.

The term was coined in the famous rage comics on reddit.
Jim: Hmm I'm not sure if I should fuck my ex again. I know I'll fap on it.
* fapfapfapfapfap*
Jim: Nah fuck that bitch

Tom: Do I really need that new TV? Welp, time to fap on it.
*fapfapfapfapfapfap*
Tom: Fuck yes I need a new 60 inch plasma tv
by sergeant-assclown August 11, 2011
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Man i was fapping last night and totally jizzed all over my hands.
by liemmm March 3, 2009
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To masturbate prior to making a decision involving women. "Fap" comes from the onomatopoeic representation of masturbation popularized on the internet via web forums.

When one faps on it, sexual tension is released through masturbation, resulting in a mind that is clear in thought and a rational decision can be made involving women, usually sexual decisions.
Bro 1: I'm not sure I want to drop $40 tonight on drinks with Jen at the bar. I wanna fuck her, but I don't know if it's worth spending dough on her.

Bro 2: Fap on it. Then you'll know what to do.
by ilikeitraw0 August 15, 2011
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When you can't get anyone to give you legit sex so you must live a solitude sex life of strictly bringing yourself to orgasm.
I have chronic halitosis so no one will give me any real sex. So i am doomed to a life of eternal fapping.
by MissTaken April 6, 2017
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