One time I was in a Brayflox DF group as a DD and a bad tank (no mark, weak enmity) made a simple mistake (accidentally stepped on the bridge and spawned the last set of flies) and instead of owning up to it tried to blame me and insult me while bragging about all it's level 50 achievements.

The group were all from the same FC so I sat my arse down and made them my b*tch for the next 75 minutes or so until the duty timer ran out. They couldn't kick me, they didn't want to give me loot, I refused to help them and they were too proud to leave and take the debuff so we all waited it out. The crappy tank actually made his crappy DD girlfriend we were carrying wait out the timer while she complained about being held there against her will. What a charming fellow.