Fairy as an egg group, yeah. But, but, I mean, it's a water Poke that looks like a mouse, I don't get what's 'Fairy' about it. Will Pikachu be Electric/Fairy now?
(I'm a girl, just btw)
Fairies are a little more complex in mythology than pretty, tiny, flying women. The term encompasses a whole host of magical creatures, including small wizened little creatures. Like, for example, Clefairy or Marill.