Because LFR is almost an insult of a raid dungeon for most people, a lot of people tend to be "sleeping" through it. I saw a rogue that had a healer on follow, and the healer was just jumping in circles with the rogue on follow during stone gaurds. I saw a warrior auto attacking Garjal... I saw a priest using speed feathers to run in large circles around the arena of Will of the Emperor. (no damage / no healing done).
As a priest healer, I would life grip the highest melee dps on cooldown, this brought some great LoLs after he raged in whispers to me. As a ret paladin, I have been known to HoP the tank to kill the next highest melee dps, (i made sure my dps was right under one of the highest melee). During Spirit Kings, I would make sure to get my cooldowns ready to pop as soon as the raid became hostile towards eachother, and I would try to kill as many raid members as possible during the Ret burst. During DS I would dot the trash next to morchock during the encounter. Great times
What are some of the funny things you have seen / done in LFR?