Fap
'Fap' is an onomatopoeic internet slang word for male masturbation that started in Clay's Sexy Losers webcomic on April 28th, 1999. The term spread through Urban Dictionary entries, YTMND pages, and forum culture in the early 2000s, settling in as a standard piece of online adult-humor vocabulary.
Overview
'Fap' is an onomatopoeic word used online for the sound of male masturbation, functioning as both a verb ('to fap') and a standalone interjection1. It shows up across image macros, forum threads, YTMND pages, and adult-humor sites, and picked up a matching female counterpart, 'schlick,' after an anonymous Urban Dictionary entry posted on April 12th, 20032.
The sound effect mimics the rhythmic skin-on-skin noise found in Japanese manga, where onomatopoeia covers a wider range of everyday sounds than English comics tend to include1. Though 'fap' started in a single webcomic panel, it moved past its source strip and settled in as standard internet vocabulary, later stamped onto adult platforms like ImageFap and FileFap1.
How It Spread
How to Use This Meme
The word typically shows up written as 'fap' or repeated for effect ('fap fap fap') under attractive images on message boards, image boards, and comment sections. Common conventions include the verb form ('I'm fapping to this') and reaction-style posts pairing the sound with a photo, GIF, or video the poster finds arousing. Users often extend the joke with the female-equivalent 'schlick' in similar contexts.