I can't say for certain if I can call these my biggest pet peeves, but I certainly dislike metal on metal scraping noises and fingernails scratching blackboard noises. My teeth hurt just thinking about it *shudders*.
Honourable mentions: - slapping and squelching noises when people eat. Even writing that sounds gross. - people who are walking in front of you suddenly stopping and bending down to tie their shoelaces or something. URGH just go to the side so I don't trip over you!!
