You kill the poison turtle and it drops a magic battleaxe...

It's your favourite, fantasy MMO land.  Strolling through the near photo-realistic forest you come across a skeletal knight in full plate armour wielding a spiteful broadsword, his tattered tabard bearing the emblem of a cruel and long-dead Order.

Fortunately you are a sorcerer of terrific power, and you casually unleash All Hell's Fury with the merest twitch of an eye and turn its bones to dust.

You run over, loot the corpse and find: 16 gold pieces and an enchanted hat shaped like a chicken's head.
What should you have got?  Well the 16 gold is incongruous as I find it hard to believe that a skeletal knight requires any loose change.  The chicken-head-hat is just plain silly, not because its a chicken-head-hat, but because the skeletal knight wasn't wearing it, nor does it have any bags to keep such an item.  And again, why would the skeletal knight be carrying it?

What should have dropped is: an ancient suit of plate armour, a tattered tabard bearing the emblem of a long-dead Order and a spiteful broadsword, also likely very old.  You can see where I'm going with this.  What they have is what they drop.

One thing that really frustrates me about MMOs in there insistence of creating incongruous loot tables for virtually all of the mobs.  Its high time this was rectified.  I want to see mobs dropping what they are visibly carrying, plus a chance to drop a few other things congruous to their background, condition, blah, whatever.

It really is that simple.

What they have is what they drop.