Call me crazy, call me half-cocked, crazy-assed, slack-jawed redneck, but don't call me Shirley!
There are many things in this old life that I just plain out "don't get".
1. Scrapbooking. I'm sorry and I don't mean to imply that people who scrapbook are as squirrel-ass nutty as I am, but PLEASE: think of the photos before you cut them out into cutesy heart-shaped or any other shaped angle. It's just not right! Sure, the pages are real cute when they're finished, but the whole thing is expensive and I still just don't "get it".
2. Facebook. I've had my Facebook account for quite some time now and I will never understand the need for some people to want to add me to their vampire club or throw a cow at me. That's just not normal. And, no one likes the abnormal like me, but time-wasters are NOT COOL. Comment or whatever, but please, for the love of pete, no more add-ons.
3. iPods - Is there a difference between an iPod/iPhone and any other MP3 player? Seriously? Until someone convinces me otherwise, Steve Jobs will continue to get 0 of my dollars.
4. People who don't send Thank You notes - it's not hard, people. Just grab a note card and write that you appreciated a gift. If you're not capable of doing that, I have no interest in sending more gifts. (This is a shout out to someone I'm related to, but I don't think they read this anyway.... just to get it off my mind, ya know?)
There are more - waaay more, but these are all I could think of off the top of my head.