I sometimes use "Nix" or "Ixnay" ("pig latin" for "Nix") - of course, not many folks are familiar with "pig latin" nowadays, it seems.
"Toast" for something that's ruined.
Lots of guys I've known use "Bugger" or "Buggered" for when something mechanical is messed up. Particularly for things like "I cross-threaded that bolt and now it's all buggered up!" I would wonder if they knew the origin of the word.