你個頭

1. • my ass! yeah, right! (used to mock a claim sb just made, as in 专家你个头 zhuānjiānǐgetóu "expert", my ass!)

     coll.

Character by character

• 你(nǐ)you
• 個(ge)(classifier used before a noun that has no specific classifier)
• 頭(tóu)head