My biggest pet-peeve as a rogue (or as any class) would have to be amazingly retarded people...
Went into the ramparts today for the first time on my rogue (had done it several times on my hunter though), since I didn't want to waste my guild's time on a lower lvl area I just pugged it.
At the third pull or so the tank decided to yell at me.
Quote:
"Damn it! Remember to Re-sap them after they break!"
It was spelled so horribly wrong I bled from the eyes and could not bring myself to properly quote this individual.
It wasn't until about three pulls later that I realized he had believed that rogues could sap in combat...