是傻子吗

are you an idiot?

→ 是
phrase Rare #26,507
are you an idiot? A blunt, insulting question, often used rhetorically to express disbelief or annoyance. 傻子 literally means “fool” or “idiot.”
CH: 你以为我没看见吗?你当我是傻子吗?
EN: Do you think I didn't see it? Do you think I'm an idiot?

你觉得我是傻子吗

Do you think I'm stupid?

— 雨水危机 (2011)

是傻子吗

Are you stupid?

— 城市英雄 (1993)

你们是傻子吗

Are you guys idiots?

— 泰坦尼克号 (1997)

你们认为是傻子吗

Do you think I'm an idiot?

— 趣味游戏 (1997)