为啥男生没有大姨夫
[wéi shá nán shēng méi yŏu dà yí fū]
A playful pun mixing male relatives ('da yifu' is uncle's wife or aunt-in-law for man) making light-hearted jokes about why men cannot have an aunt-in-law through marriage. The humor here plays off traditional family relationship nomenclature and creates a comical juxtaposition.