An irrational affinity for shiny objects. When a highly shiny object is seen by the sufferer it often may induce a compulsive need to claim it and several minutes of staring at said object in the sun. This will later end in the sufferer pocketing the object to add to his/her collection by a sunny windowsill at home. If a shiny object is ouside of a sufferer's grasp it will usually result in an strong, though usually short-lived obsession over it.
Me: Master Chief's armor wasn't nearly as shiny as you said in the Halo 3 trailer.
Ray: yea it is it is sooooooooooooooooo shiny
Me: Magpie syndrome