1 definition by Bigppwelshman

A "Cai" is someone with an unusually large penis, that likes to flex and express how big it is to their friends and/or family. A typical Cai's penis size is around 13 inches long, while a Kai is about 2 inches erect.
Chad: Hey, guys. Let's organize going swimming this weekend.
Phil: Yeah, sure! I'll invite Jules and Brad.
Chad: Don't invite Jules. He's such a "Cai"
by Bigppwelshman October 29, 2020
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