I don't get child abuse.
I don't get bling bling.
I don't get the wearing of pants halfway or more down on the butt.
I don't get piercings, especially ones that pierce the lips or nose.
I don't get spammers.
I don't get people who are stupid enough to respond to spam.
I don't get people who wake up angry, are angry all day and go to bed angry.
I don't get people who are bored.
I don't get people who complain about being out of shape while sitting on the couch eating junk food.
I don't get pessimism.
What don't you get?