ninja

This noun and verb comes from World of Warcraft where certain loots, once assigned to a player, cannot be traded to another. When something valuable drops from a monster, a dice icon will appear which each player in a party can roll for the item or they can pass the item.

The person with the highest roll will get the item (if it's bind on pickup it canot be traded). Most people would only roll on something that they need and pass what they don't need to other players that need it.

This is where a ninja comes in.. Ninja means to roll on an item that you don't need or to roll on any item that you see whether you need it or not.

noun - omgz i just got outrolled by a ninja

noun2 - titan is a ninja, don't group with him

verb - i got ninja'd by some dude from this clan