王八蛋 (wángbā dàn) — Son of a b*tch / Bastard (turtle egg insult)

Example Usage

这个王八蛋居然还骗我！

That son of a b*tch actually lied to me again!

Cultural Context

王八蛋 literally means 'turtle egg' — 王八 is a turtle (and an insult in itself, implying a cuckold), 蛋 means egg. Calling someone a turtle egg implies illegitimate birth and is a classic Chinese swear with centuries of history. It's equivalent to 'son of a b*tch' in weight and usage.