On Friday, Joan Rivers decided to give Rihanna piece of her mind, following the singer's admission that she still loves Chris Brown. Rivers took to Twitter of course, calling Ri-Ri an idiot.

"Rihanna confessed to Oprah Winfrey that she still loves Chris Brown. Idiot! Now it's MY turn to slap her," tweeted an unforgiving Rivers.

The first tweet was definitely flagrant, but she sent another tweet to Rihanna, this time actually mentioning her and providing real advice.

"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!"

Of course it wouldn't be Twitter beef without a response from the pop star, subtweet and all. "Slap on some diapers," Rihanna tweeted to no one in particular, but clearly intending it for Rivers.

No words have been exchanged since Friday, so this will probably just fizzle out.

Source: go.madmimi.com