This exploit can only be performed by a class which can dispel magic (probably).
Get the Golden Lotus Daily Quest "In Enemy Hands". You have to free some hypnotized
pandas from the Shao-Tien Mindbender mobs. You are supposed to kill the Shao-Tien
which frees the pandas from their mind control. They then thank you and vanish.
A quick way to finish this quest is use spellsteal (or dispel magic or whatever) and remove
the mind control buff from each panda. They then turn on their handler.
I tried cc'ing the Shao-Tien and then kiting the hypnotized panda away from the lake. They
follow you out of the zone. If you then dispel their buff they don't vanish, they just stand there.
They don't become your pet, they remain in the same fixed position, but anything nearby
which attacks you they will fight.
You can kite up to ten pandas anywhere in pandaria to help you fight anything.
They do reasonable damage, seem to be immune to special attacks, and have 450K HP.
I managed to get five of them to tank Moldo the one-eyed for me.
In theory you could probably kite ten of them to the Sha Of Anger and solo it, but it would take you
a few hours to do that much kiting.
(Note: once the pandas are kited away from the zone it doesn't seem that any one phased in that
area can finish the quest, so this may piss Blizzard off if you overdo it).