fap

[ fap ]

verb (used without object)

1. (of a male) to masturbate.

noun

1. the act of masturbation by a male.

Word History and Origins

Origin of fap¹

1999; imitative of the sound of a male masturbating, coined by an artist whose pen name is Clay on his webcomic The Thin H Line, H referring to hentai (pornographic Japanese anime); hentai ( def )

Example Sentences

Healthy fibroblasts produce FAP at a low level, but once activated, the quantity of the protein shoots up.

From Singularity Hub 

This is why the newly converted FAP CAR-T are undetectable within a week rather than months or years.

From Singularity Hub