I mean it makes sense. It’s canon that

A) Humans are actually related to Pokémon, that we were one and the same, and Pokémon-Human marriages used to be common in older times (Canalave Library, Sinnoh)

B) Breeding mechanics results in a child of the mother’s species, with the father only contributing egg moves

So it’s conceivable that not only does Mr Mime fuck, but he can produce viable offspring with humans, and Ash is the son of a Mr Mime.

WHAT IS THIS CURSED SHIT LOLOLOL