I've been playing WoW a bit and it's a pretty good game. One of the focal points of the game is your armor and the power it gives you. Armor will usually have some sort of magical property that increases a characters stats. So you could be wearing a hat that makes you smarter, or gloves that help you recover life and mana better, or pants that give you more life. So one day I wondered what if you had crabs, lice or maybe fleas and were wearing armor like that? Would wearing this armor impart the same bonuses to them as well?
Really it's just a random thought I had months before I got around to making anything about it.