I really dislike people who CHOMP there gum. You know like a horse. I also dislike when people crack their knuckles, my sister has done this since I was little and it drives me crazy and now my husband does it and I just cringe!! Oh and lastly my biggest is people who are in the drive thru at my work wanting to accomplish their banking needs but are also on the telephone, PLEASE DON'T DO THIS!!! I want to scream when I walk over and see someone on their phone but they also want to make a deposit or withdrawl, make your call and then come through the drive thru!!!