AWKWARD ZOMBIE

Two for two! Woohoo.

First panel is positively adorable.

Ditto egg!? It's a miracle!!

Is the implication that one thinks the other is a ditto or that each one thinks it was cheated on?

Don't think about it. Thinking about it even slightly causes it to fall apart.

I knew it all along. Every Pokemon is a Ditto at birth. I bet even all the humans are Dittos. The world is ruled by Dittos.

I'm pretty sure the implication is they are both secretly dittos and the last panel is them both going "you freaking lied to me"

First stab at editing, please be gentle...

I think it looks noiceeee.

Clever

So Cubone wears the skull of its dead mother.

I guess she has to die now.

So...
1) One of them's a Ditto that cheated with another Ditto (gender, of course, does not matter)
2) They're both Dittos

The father probably can't lay eggs and the mother would know if she had...
Like I said, don't think about it.

On that note, where do ditto come from? We know they can't mate amongst themselves. Does a ditto mate with another Cockfighting Society, and then when that mon grows up a ditto bursts out of their chest?

Dittos are failed genetic experiments at cloning Mew. They have the same weight, colour and shiny colour as Mew, and like Mew they have the signature move Transform. Also like Mew they contain the genes of every Cockfighting Society species (which is presumably what allows them to breed with anything). You can find them in the original game in the basement of Cinnabar lab, where the Mew cloning experiments were first carried out, and at higher levels in Cerulean Cave, where the strongest result of the Mew cloning process, Mewtwo, is also sealed away.

So one is a Mew and the other is a Ditto. Case closed.