1. Wearing shoes in the house… What the fuck are you doing? You step in all nasty shit, for example, if you stepped on a fruit then walked all over your living room then thats how you get ants.
2. Advertising prescription drugs. That was the weirdest one for me. “ask your doctor for brand x antidepressants” type commercials on TV. In the UK, your doctor tells you what drugs you should take, not the other way round.