- 尿裤子 niàokùzi to wet one's pantsto urinate in one's trousers
- 穿一条裤子 chuānyītiáokùzi very close(colloquial) to be like family; to have been through thick and thin together; to share the same views and fate
- 纨裤子弟 wánkùzǐdì playboyprofligate or idle son of a rich family; dandy; fop
- 脱裤子放屁 tuōkùzifàngpì to do something unnecessary(xiehouyu) to do something completely unnecessary or to make a simple task overly complicated; same as [[多此一举|多此一舉|duo1 ci3 yi1 ju3]]