My favorite was when there was a new app to my guild, who hadn't yet seen me in a group or in a raid.
He began asking in /g if I could heal his heroic Shattered Halls group. I responded with the following:
"Healing? Is that the thing where I take some sort of severe beating and hope that someone else restores my health before it reaches 0? Yes, I can do that."
To which he responded with something along the lines of "I don't think a paladin can solo tank a heroic like that. Let's get a backup tank so you can offheal too."
I ended the debate with 2 things- 1) Saying that if a paladin tank couldn't do that then all those other times must have been flukes, and 2) tanking the smoothest heroic Shattered Halls he'd ever seen.
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Someday I'll eventually log out in gear I actually tank with.
http://armory.worldofwarcraft.com/character-sheet.xml?r=Darkspear&n=Sinfonian
