One of the days where you glimpse a single magpie around you on a certain day which you plan something. Then it all goes horrifically wrong and corrupted and you feel totally screwed.
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
Like a magpie is attracted to shiny objects, the cock magpie is a girl (or guy) who just loves the cock. The cock magpie is commonly found surrounded by disproportionate amounts of male genitalia.
Aaron: "I can't believe Mark got out with that girl last night"
Tom: "Yeah i know, she's such a slag. It'd be like throwing a hotdog down a corridor...."
Matty: "She's always like that, she's a real cock magpie. She just loves the cock"