Oh where do I start!!
People who dont dispose of rubbish/recycling properly. Every time my sister comes around she puts coke cans in the general waste instead of the recycling bin
Anyone who just flicks fag ends into the street/out of car windows. Disgusting.
People who get 'to' and 'too' mixed up. I have a family member who posted a facebook status recently saying something like ''went too my mums today too have a catch up'' - shes in her late 30s and I am amazed she doesn't understand the difference by now. I had to unfollow her!
I had a friend at college who used to get the phrases "then again'' and ''yet again'' mixed up
People who park so badly that nobody can park next to them. Especially when its busy.
Anyone who says kiddies or kiddos
Adults who refer to themselves or another parent as a mumma/momma/mamma. I'm pregnant and I've had SO many people say things like ''ooo you'll be a momma soon!''. No I wont. I'll be a mum soon.
My OH squeezes the toothpaste tube near the opening instead of rolling the end down. So we end up with no toothpaste near the opening to squeeze out but lots of toothpaste at the bottom of the tube and I have to un-squeeze it and roll it down to access all the trapped toothpaste
I'm sure I can think of at least 10 more things but these are just off the top of my head 