Blac Chyna Fires Back at Wendy Williams for Rant About Rob Kardashian

Wendy Williams just learned the hard way that you don't want get on Blac Chyna's bad side.

Williams went in on Chyna and Rob Kardashian for a solid 5 minutes on her show Friday -- saying Chyna's only using Rob for personal gain -- and calling the "old" Rob thinner, smarter and more confident. Chyna clearly got word of the show segment, and unleashed an all out verbal assault on Williams Saturday in an Instagram post.

Chyna fired off, "so funny how you love to talk about Rob and his insecurities like at a point in time you wasn't a fat 400 pound ass b*tch on the radio!" She continues, "You go out there talking about my family like you just hit the pipe backstage!"

She ended the heated message with "your horse face ass woke up on the wrong side of the stable and decide to go overboard with your f*** boy comments. B*tch f*** you!" Yikes!

Read her full message below.

Williams has yet to comment publicly on Chyna's latest Instagram post.

Best friends Blac Chyna and Amber Rose discuss the Slut Walk and women empowering other women in the video below.