Pet peeves:
-people making noises for no reason
-catching someone lick or stick their fingers in their mouth
-someone trying to act this and that to either get attention or for other reasons that isn't necessary
-someone standing right in front of something/someone
-loud chewing, especially on food or gum
-saying no offense if you know it's going to be offensive
-repetitive hastags
-someone eating off your plate
-asking for someone's food while reaching your hand out for it
-slow walkers, especially if it's a group like move!!!
-groups of people who blocks where you're trying to go to
-line cutters

There's so many more pet peeves that drives me nuts as I try to hold in my insanity when I see it happen in front of me.