[Boodysaspie]

Can I just point out that if you accept that parallel universes exist then somewhere there must be a flat earth with all the relevant laws of physics in place?

I’m still trying to reconcile how

“We don’t know what shape or size it is, but we know it’s flat”
“It keeps accelerating but it never gets any faster”
“That's what the sun, moon and stars do”
“It’s a conspiracy”
“Photos are doctored”

are OK, but

“Round Earth can also be Flat Earth, if the Earth is a disc”

is a “horrible, horrible idea” from a “ … smart-ass”

and I can only think that we have a serious clash of cultures

[Havonii]

But if they believe in parallel universes, than there are universes where the Earth is a sphere?, right?

[Vsauce]

But if they believe in parallel universes, than there are universes where the Earth is a sphere?, right?

or our universe is round and some other ones are flat...

[Boodysaspie]

Ironically, both our solar system and our galaxy are flat. Just not the planets, or stars, or anything over the potato radius.

[Boodysaspie]

But if they believe in parallel universes, than there are universes where the Earth is a sphere?, right?

Well, yes, I can think of at least one 

[Havonii]

Ironically, both our solar system and our galaxy are flat. Just not the planets, or stars, or anything over the potato radius.

'potato radius' I love that. Our solar system and galaxy are flat due to the preferred motion and velocity of the nebulae, before it formed the Milky Way.
 There are galaxies and solar systems out there that are not flat, but all kinds of shapes, more like cotton candy.