[quote=@Rin]
I... Uh...

...I don't want to ask how Mongolians masturbating allowed them to conquer the world do I.
[/quote]

Not the entire world. Just Eurasia. And North Africa. The Americas were totally undiscovered because people got better things to do.

And as Raineh said, it's alt history terminology. It's not actually them doing that, it's just...how they would look if someone who was decided to write an original history of the Mongol Empire