tongue in cheek

(also with your tongue in your cheek)

If you say something tongue in cheek, you intend it to be understood as a joke, although you might appear to be serious.
开玩笑地；说着玩地

例句：

He said that he was a huge fan of the president, although I suspect it was tongue in cheek. 他说自己对总统极为仰慕，而我认为他是在开玩笑。

tongue-in-cheek

英音 /ˌtʌŋ.ɪnˈtʃiːk/

美音 /ˌtʌŋ.ɪnˈtʃiːk/

[ adjective before noun ] meant to be understood as a joke, although it might appear to be serious
[ 形容词，用于名词前面 ] 开玩笑的；说着玩的

例句：

Her latest play is a firmly tongue-in-cheek look at the world of advertising. 她最新的剧本对广告界大开玩笑。