我老公的媳妇是个美比我媳妇的老公是个帅比
[wŏ lăo gōng de xí fù shì gè mĕi bĭ wŏ xí fù de lăo gōng shì gè shuài bĭ]
This one is quite amusing and casual. Loosely translated, it means 'My husband’s wife is a beauty while my wife's husband is very handsome'. The user is jokingly emphasizing a mutual compliment about how good-looking each other’s partners are