risk one's neck
找死
A:What? Your diamond ring is lost?
A:什么?你的钻石戒指丢了?
B:Yeah, I just can't find it anywhere.
B:是的，我哪儿也找不到。
A:It must have been stolen by the few thieves. I'll get it back for you.
A：一定是被那几个小偷偷去了，我替你找回来。
B:You're risking your neck. Don't you know they have guns?
B：你真是找死，难道你不知道他们有枪?