THREE RANDOM THINGS I REALLY DISLIKE THAT MOST PEOPLE APPARENTLY DON'T, AND THAT'S OK, BECAUSE EVERYONE IS ENTITLED TO THEIR OWN OPINIONS
1) "What's up?" (and variants) </b>as a throwaway greeting.</b> "What's up?" as conversation is fine. But most people don't use it that way. People use it in all sorts of contexts when no answer is expected, or even possible -- such as when as you're passing someone on the street, not even breaking stride.
"How's it going?", etc., can be a pain, too, but at least can be knocked out with a one-word answer. "What's up?" requires a sentence.
2) Dragon boobies in furry pr0n. Now, I realize that "Dragons don't have mammaries!" is a silly science-nazi fallacy based on an arrogant assumption that everything in the universe fits neatly inside our Earth taxonomy. But! I feel well within my rights as an opinionated* old** bastard*** to say, I simply don't find scaly breasts sexy. I guess I'm a purist.
IMHO, if what turns you on about dragons/draconids/anthrodracs includes jiggle, it's not the dragon that's turning you on. There's nothing wrong with breasts -- they're quite sexy. But when I want to see boobies, I go stare at mammalian furries (and try not to stand too close to the science nazis).
3) Chocolate. I prefer the taste of carob. I know, I'm a freak.
** Possibly true depending on definitions.
*** Not true.
3-2-06: Edited #1 for clarity.