How about people who insist on popping those bubble rap sheets.
Makes you want to suffocate them. LOL.
Haha, you would kill me, lol, because I have an addiction to popping bubble wrap!
Seriously though, I can't stand the sound of someone flicking one fingernail directly up under the other. Also, beetles flying around and hitting a hard plastic lamp shade with their shells (which is happening as we speak, ugh) and the sound silverware makes when it scrapes against your plate!