Here's something that I hate:

People who primp and priss in front of public bathroom mirrors.

I can understand straightening out your hair, and smoothing down your shirt or your skirt. But the people who spend several minutes primping their hair, and touching up their makeup, and whirling around in the mirror so they can closely observe their bodies in every concievable angle need to understand that public bathrooms are for two things: Number 1, and number 2. They aren't primping rooms, or vanity rooms, they are bathrooms! And frankly, nothing is more irritating than waiting for someone to vacate the bathroom because you need to do your business and having them primp themselves in the name of Beauty for 5 minutes while you are desperately trying to hold onto your bladder... and other things.

However, the thing that I hate more than people who primp and priss in front of public bathroom mirrors..... people who primp and priss in front of bathroom mirrors BEFORE THEY HAVE WASHED THEIR HANDS. You wouldn't rub your hands over, under and around a toilet seat and various other bathroom fixtures, would you? They why oh why, would you emerge from a bathroom stall and proceed to run your fingers through your hair, or touch your clothes? There's a word for that: it's called DISGUSTING. And touching your hair, face, and clothes prior to washing your hands kind of eliminates the point of washing your hands, don't you think? While I don't condone the use of bathrooms as your own personal primping station, I certainly would prefer people who primp with clean hands, versus those who primp with pee-stained, germ-infested hands. WASH YOUR HANDS PEOPLE!