Seriously I have ALWAYS wondered this.
I mean some of it makes sense, like Ragnaros and Sulfuras dropping off him, or Cho'gall and the Hammer of Twilight. Or a Armor wearing boss having like a robe on him that he also drops (which also kind of means what we are undressing the boss).
But where do bosses get like "Cloth Robes" or "Plate Bracers".
Honestly by that logic, this is what happens:
Character 1: Oh my God, those robes on Grand Empress Shekzeer look AMAZING. Look at those stats!
Character 2: Jeez! She was holding 40 Valor Points?!
Character 3: Wow..a Mace she wasn't..even....using.
Character 4: Apparently she was holding a conveniently place Token for armor for the specific classes of Death Knight, Mage, Druid and Rogue.
So seriously can someone give me some kind of explanation?!
(This is not a really serious thread, just some fun "speculation" if you even want to call it that for where bosses get the Valor Points/Justice Points, Weapon, Armor, etc they wear. Have fun.)