We know that the Kardashian family loves to mercilessly tease each other and this is just further proves how far they'll go!
While Kris Jenner was filming a promo for QVC, Khloe Kardashian taped herself mocking her own mother behind her back.
Then again, Kris does do a very good job of "turning it on," but Khloe's jokes made it even more HIGHlarious!
Sorry, it's at your expense, Kris! You DO look great in front of that green screen though!
Watch Khloe mock Kris' "fake smile" (above)!
[Video via Khloe Kardashian's Keek.]
Tags: khloe kardashian, kris jenner, mocks, qvc