I also have a nearly uncontrollable urge to say inappropriate things at times. For example, when writing a script for corporation X, I was instructed to emphasize everything as family-oriented. I felt the familiar tickle in my brain-stem, and couldn't resist saying, "So you want it really gay? How gay are we talking about, here?" Which is almost as bad as when I walked into a meeting of a bunch of web-wonks who were looking very serious and concerned, and shouted, "What up, *******?" (PM me if you really need to know the word. It got a good laugh, though.)

I usually get away with my inappropriate outbursts, if only 'cause they make people laugh. If there's no laugh, I am in deep trouble.