[...You know, he's probably making a huge mistake attempting to help this kid out, but he's going to try!! ...And switch it to audio so his expression isn't painfully obvious because he can feel himself making one of those faces.]

From what I've seen this sort of thing happens every so often, usually around this time of year. It's probably because of the holidays. No one knows how the eggs get here, but everyone receives one and they usually contain a rare Pokémon.