1. People cutting queues on the road or otherwise. (so so hate this! Selfish people!!)
2. Internet trolls
3. Being called 'Ah Moi'. (It's a local slang used by mostly Malays to refer to young/pretty girls)
4. Smokers that smoke in the toilet.
5. Eyelashes in my eye.
6. Self righteous people that contradicts themselves.
7. Stupid people, generally.
I'm sure I have more pet peeves, but these are the ones that immediately come into mind :D