http://nintendo3dscommunity.com/topic/13565-warning-wonder-trade-mysterybad-eggs-in-pokemon-xy/
http://www.youtube.com/watch?v=TjsySmLeBS0
So is this Mystery Egg glitch bullshit real, and if so, a widespread issue? It supposedly infects the Pokemon in your PC and changes them into useless unhatchable glitch eggs, even if you restart the game