作法自毙

作法自毙 [zuò fǎ zì bì]

1. ■ make a law only to fall foul of it oneself; be caught by one's own laws [device]; be hoist with [by] one's own petard; be injured [caught] by what one intended as a snare for others; do things harmful to oneself; get caught in one's own trap; Harm set, harm get.; Harm watch, harm catch.; lie in [on] the bed one has made; stew in one's own juice; You have made your bed, you must lie on it.