So, we all have those things, those things that are just so annoying, so indespicably, outrageously blood boiling that you grit your teeth just thinking about it.
Post em, get em off your chest. Share with the world your pet hates.
Heres some of mine:

People who go slow in the fast lane, and stay there. They just dawdle along like your not behind them. GRRRR

People who are too lazy to put there trolleys back in a supermarket car park.
WHY the hell are you blocking MY parking space because you couldnt be arsed to push it 10 metres to the bay!!!!

Those people that think theyre special. I work the door on a nightclub, and they come up to me saying "can i get in free. i know the manager" To which i reply "whats the managers name?" They pause and walk away. Then those people that nag for discount, THIS ISNT A BLOODY MARKETPLACE, ITS A CLUB!!