One of my pet peeves is improper grammar
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When people chew with their mouth open...
Yes! That just reflects on the parent(s) who never taught their kids table manners.
People bugging me while I’m doing something. If I’m busy, leave me be or suffer the consequences of your actions. I’m not being vaguely threatening, I just like to be left alone while I’m doing something.
People making annoying noises just to spite me. People stereotyping me or other people. People telling me I’m not good enough. People acting like they are better than other people. People who bring other people down to make themselves feel better. All of these things make me really frustrated.
People who make tapping sounds, with there feet, or hands repeatedly.