[ zuòfǎzìbì ] 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
Your husband had little thought how his teaching would recoil upon him ! 你的丈夫一点儿也想不到，他会这样作法自毙吧！
2.
It was indeed a clever plan to entrap his opponent , but in the end he was hoist by his own petard 设圈套陷害他的对手固然是个妙计，可是到头来却是作法自毙。
3.
“ i think bloodstain analysis is being used and abused more and more , ” he said . “ of my students , there are about five frankensteins “我认为血液分析正在被越来越多的滥用， "他说， "我的学生中，大约有五个作法自毙者。 ”
