- 尿裤子 niàokùzi wet one's pantsto wet one's pants
- 穿一条裤子 chuānyītiáokùzi in cahootsto share the same view of things or be on the same side, often in a collusive or conspiratorial way
- 纨裤子弟 wánkùzǐdì dandyA pampered son of a wealthy family who lives a life of leisure and dissipation.
- 脱裤子放屁 tuōkùzifàngpì unnecessaryto do something entirely redundant or to overcomplicate a simple task by adding unnecessary steps (literally: to take off one's pants to fart)