Joan Rivers is known for her crude jokes, and going too far. Well yesterday, Joan Rivers tweeted a harsh uncalled message to Rihanna.

Rihanna confessed to Oprah Winfrey that she still loves Chris Brown. Idiot! Now it’s MY turn to slap her.

Honey, @rihanna, everyone knows: If he hit you once, he’ll hit you again. Read the statistics. PS – Love to have you on Fashion Police!

But bad girl, Rih Rih stay calmed and simply responded to the disrespectful tweet

“CONTROL YOUR SPEECH!” accompanied the line with a passage from Proverbs 15:4 titled, “Control Your Speech.”

However Rihanna’s Navy went in on Joan Rivers,

“I bet your brain is made of plastic too, @Joan_Rivers,” and “Rihanna would slap you back, the only difference is that your face would fall right off.”

Go wash your dentures @Joan_Rivers

Joan Rivers looks like a melted cat.

Do you think Joan Rivers crossed the line this time?