This is another usage of the word "fap", which means to masturbate. There are three distinct levels of fapping and Fap Master is the middle most level of fapping. It is someone who spend a considerable amount of time fapping, but not enough to constitute being a Fap-a-saurus Rex. A Fap Master spends about 3/4 of his day fapping, but he still gets things done; like eating, showering, and sleeping. A Fap Master does not spend every waking and non-waking hours of the day fapping, only some of them. And you still do not want to shake a Fap Master's hand.
Chick: "So how many times a day do you fap?
Dude: " Oh, about 4 or so times a day."
Chick: "So your a Fap Master and not a Fap-a-saurus Rex?
Dude: "Maybe, but I am fapping right now!
by Dash Random October 27, 2010
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Fap Master is someone who find good fap materials for other people based on what do they like.
Fap Master can you find something i can fap to tonight
by Hikki9 March 12, 2016
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A faggot that faps alot, and hates his parents

Edgy/dumbass/virgin/horny to the max/useless to sociaty.
John: yo wsp what's your name on discord ?
faggot: Da Fap Master#4269
John: gtfo
by NoobPillow July 23, 2020
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