What are your PET pet peeves? :D

Sometimes when me and my cat cuddle, she likes to bite my face. She does it out of nowhere, like suddenly she just bites my nose or lips, always the sensitive parts. She once ruptured a pimple on my nose, and it hurt like hell... -_-'
 
Lol um... Well, it's not a pet pet peeve of mine but at the same time, it's not like I want to strangle my pet because she always scratches the backdoor when I'm trying to fall asleep... Or is it?
 
Groups of people walking in a wide line, taking up the entire walkway. Similarly, people who decide to have a chat on an often-used staircase.