I searched to see if this was posted before, but i can't find it. Please don't flame me if it has.
You will need:
~Any Decently leveled character class (Depends on instance drops, like if one drops more warrior inclined loots, go a warrior.)
~Some armour and weapons (6-10 levels lower than you.)
~A group full of loving people. (This helps as they see you with lower items.)
~No sense of Camaderie to your fellow players.
To do:
1. Join a group that is going to any instance that drops good loot for your class.
2. Equip your really crappy armour
3. Need anything and everything saying it is better than what you got
4. Pray that they dont notice you have not put it on
5. Finish the instance
6. Laugh your way to the AH! Or Disenchant or keep what you need.
Whenever im strapped for cash (which is often, Strippers are expensive nowadays) i do this. Depending on the level you can get good amounts of money plus XP, so your not bored grinding that same old mob everyday. and it isn't a reportable offense.
Hint: if someone notices that you havnt put on the new items just say " wtf, it keeps saying cannot equip items in combat, IM NOT EVEN BLOODY FIGHTING :S" saved my skin a couple of times
P.s. Please don't flame if this has been posted already