Any sort of fetish learned about, expanded upon, or performed on the internet.
Phew, that 30 hour Everquest marathon took a lot out of me, time to grab some cheetos and perform some webcest!
by Opopanax August 8, 2005
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Webcest is when you realize that you're wanking off to a distant relative without knowing before. For a more thorough definition visit
www.webcest.com
"I was maturbating to this girl on the internet, and then I realized she was my cousin"
"woah that is totally webcest."
by Webcest August 6, 2005
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as bad as incest, only it happens in cyberspace
Webcest is that special feelin' you get when you're makin' love to your old lady and you're both dressed like giraffes! It's that feelin' you get when you got high-res, glossy printouts of tubgirl and goatse and you're all alone on a school bus.
by rebeltoconform August 18, 2005
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Webcest is being such a fan of slash that you start to google terms like, 'abe lincoln george washington erotic'.
That's GOOOOOD Webcest!
by Thief! August 30, 2005
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