http://www.gamefaqs.com/boards/696959-pokemon-x/67476139
An obscure glitch, seen by this one guy on the day the game came out, and for which I've seen zero other documented cases.
There is currently only one hacker that's even capable of doing anything that might cause this glitch, starting
yesterday, and he's sworn he's putting nothing on the Wonder Trade or GTS.
I strictly speaking do not know what caused this glitch, but I can say what
isn't, and it's the hackers.
Settle down.
Creator of Jay's Journey (see quote!)
"It's not ten years old! Therefore, it sucks!" - Nostalgia whores everywhere