People who say “mute” instead of “moot,” as in, “that idea is now mute.”
Also people who say “re-la-tor” instead of “realtor”. Idiots. Idiots. People. I hate ’em. (this latter line is, of course, a take-off of the Outland cartoon where Opus the penguin hears some crotchety old curmudgeon walk by fuming and saying, “Left wingers, I hate ’em!” while Opus looks down at this left wing in bepuzzlement).