I think there’s something wrong with my brain. I just went to quit an application, and the print menu came up. I cancelled, and tried to quit again — this time taking the time to make sure I hit the right menu command. The print menu came up again.
I started wondering if there was some weird bug in the program that had things crossed up. I tried again, and this time, I finally saw that I was hitting print instead of quit. See, in Mac OS 9, the Quit command is always at the bottom of the file menu. In OS X, the quit command gets moved over to the application menu, and the bottom of the file menu is variable (in this case it was print).
I know muscle memory is a powerful thing, and I move in and out of 9 or X depending on whether I’m on a home or work machine, but man. I read it. I read it slowly and carefully. Very, very slowly and carefully. That menu command said quit, not print. My brain is broken.