Hmmmm, couple come to mind immediately
If someone drives over to my house, hubby's home, and I'm not...and they chose to park in the driveway ( in my spot) instead of parking on the street. Just park on the street, what do they think....I'm NOT coming home? It's a stupid pet peeve but it irks me to no end.
Another is people who think because your door's open, they can just walk in your house. Ring the bell, please, you have no clue if I'm in the shower, sleeping, or doing housework nude,(ok so that's usually NOT the reason....I
may be nude but not doing housework

) or maybe, just maybe I didn't want you to come in.
People who've "quit" smoking but smoke yours. Yeah, they quit alright...buying them that is
Last one... for those persons in my house who think it is OK to drink any beverage from the container....if there is more than 1/2 inch left, POUR it into a glass. Thank you.
Ok, there, I've said it and now sound like witchest person on the street...it's a wonder I have any friends
PS...Disclaimer....I have never confronted anyone guilty of the first three pet peeves on this list....cause I am NICE (or chicken, can't figure out which, maybe a nice chicken) The last one I repeat frequently to no avail....goes in one ear and out the other.