A gay man, usually of the ultra-slender twink variety, that may enjoy dressing up seductively as a cat. He takes on the persona of a cat also as a sexual fantasy.
Suppose you see a really attractive, slender young gay guy with nothing but a speedo, tail, and ears, that would be a catboi.
by firetheflowing March 23, 2009
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A young-ish homosexual male, who has lived in his mothers trailer for years, has many cats, has dramatic weight swings, is socially awkward and almost exclusively hangs out with straight/ bisexual girls. Thus, explaining why he is practically asexual.
(while at the club) " Oh My God... did you see that catboi wearing a Christmas sweater covered in cat hair that glowing under the black light.... poor lonely thing."

(in a formal setting) "is that your poor lonely catboi cousin? Damn, if i ever let my self go that bad will you just put me out of my misery?"
by theonewhoisnotknown November 27, 2009
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The hottest mother fuckers you'll ever meet.
Ever simped over a catboy? It's a dangerous game.
by Emerythingrhymes December 29, 2021
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A male that wears Cat Ears, Cat Paws & a Tail. They may also be a Femboy
by Shark the Catboy February 20, 2022
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Either a male human that is half-cat(thus having cat ears, a cat tail, and paws) or a male cat that is half human(thus standing upright and having slightly more human anatomy.)
Sometimes also used to refer to a male that acts like a cat.
"My boyfriend is such a catboy..."

"Do you like stories with catboys?"
by Psychosis Poet November 24, 2004
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The ultimate being. Beyond all understanding of genetics, catboys have become the ultimate being in the universe? Was it evolution? Was it a gift by some deity? We will never know, but what we do know is that catboys are the ulimate being.
im a catboy nyaaaa -the ultimate being
by neyoid January 7, 2022
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