language help needed

I have a Chinese scientist on my lunar base, and he's just seen something he is *deeply* unhappy about. I need him to say something vaguely equivalent to "What the fuck?" (ie, a fairly impolite expression of surprise and dismay) and to my thinking it'd be nice if it wasn't in English. If anyone here knows enough Chinese to point me in the right direction (and let me know what dialect you're giving me the words in, since I know enough to know they aren't anywhere near the same) that would be a huge help.

Thanks (-: