Kim and Khloe Kardashian Go on Mud Run, Talk Dirty Vaginas >>Hollywood

Kim Kardashian and Khloe Kardashian (mud) run this town.

In a klip from this Sunday's new episode of Keeping Up with the Kardashians, Kim and Khloe take part in a mud run, getting down and very dirty with each other in the slop while talking about their sisterly bond.

And also about their dirty vaginas.

Check out the sneak peek and note how natural and totally unforced these sibling interactions are:

Keeping Up with the Kardashians Clip: Mud Run Time!

Looking for more? Go watch Keeping Up with the Kardashians online via TV Fanatic.

And also toggle through the following Season 9 photo gallery:

Keeping Up with the Kardashians Season 9 Pictures

1. Racism Sucks!