I've found myself using "Ess-hit" at work. I work with the oublic so frustration is common, but curising is a no-no so this makes a fine substitute.
Also, I'm taking an improv class (I have no idea whether this is something I should be mocked for or not) and during a scene I "borrowed" Tom's "He looks like a vice-principal" line. That's probably a no-no, but it wasn't intentional, it just popped into my head.