Aren’t comedians supposed to be funny?

Nick Cannon took to Twitter last night to blast comedian and host of Chelsea Lately, Chelsea Handler.

"I hear @ChelseaHandler is out there talking s--t about my wife again! She's lucky I'm trying to live right now! Jesus my cup runneth over,” Cannon tweeted.

“I think @ChelseaHandler is still bitter that she got blasted on my radio show! It's okay I still love you,” he continued.

“When miserable people see happiness they must attack it."

"You know me, I'm always up for a good joke or wise crack but when people talk about my family the "Hood" in me wants to come out! I've learned cooler heads prevail. Life is too short to focus on negativity!"

No telling what prompted the attack from Cannon, but the two have famously battled in the past.

"I just heard Nick Cannon is starting a comedy tour,” Handler tweeted in the past. “Who's going to do the comedy?"

Cannon responded by calling Handler “ugly white trash,” but the two eventually made up on his radio show.

"She was constantly on her show, kind of picking on me and my wife," Cannon explained after the battle. "You can say what you want about me, but when you start talking about my wife, I get a little sensitive. Hey, that's my family, you know? The protective lion comes out."