影视英语口语:玩火自焚

“玩火自焚”在英语口语里能怎么说？

普通口语：fired by myself
地道口语：hoisted by my own petard

素材来源：另类童话色彩《灵指神探》
剧情简介：
Chuck向Ned和Emerson坦白，其实她并不是自费旅游来着，而是有秘密的任务在身，她说自己玩火自焚了，Ned吓一跳以为她是毒贩子，结果Chuck说她只是猴儿贩子......

Chuck: I'm not who you think I am.
Emerson: Who does he think you are?
Chuck: The small town girl who never sawthe world only to have her first time out be her last - well, that is who I am, but I was hoisted by my own petard!