Speak Chinese: 你在开玩笑吗?
(Nǐ zài kāiwánxiào ma?)
Are you kidding? (Beginner)
 Example:
Gōngxǐ nǐ zhòng le wǔbǎi wàn!
A:    恭喜    你   中    了  五百   万!
Congratulations! You’ve won five million in the lottery!
Tiān na,   nǐ zài kāiwánxiào ma?
B:    天    哪,你 在     开玩笑    吗?
Oh my God! Are you kidding?
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