Funny clip from David Letterman Monday night. If you’re one of the thousands following what you think is Jonah Hill on Twitter, you’ve been scammed by a hacker. Fake celebrity Twitters are not uncommon but this idiot has even caused a feud with “Iron Man” director Jon Favreau.

“I have never been on the website Twitter nor will I ever be on the website Twitter,” Jonah told Dave. “Apparently this kid has been talking trash to Jon Favreau,”

Jonah said that since he wanted to work with JF one day he had no choice but to call the director and apologize.

File this one under ‘what the heck is she doing with him’ file. The National Enquirer says that Mary-Kate Olsen cheated on her boyfriend Nate Lowman with tubby Jonah Hill. The unlikely pair hook-up at Chatuea Marmont August 26.

“It was a shock to see Mary-Kate together with, of all people, geeky Jonah,” an eyewitness told The Enquirer. “They were on a double date with another couple, dining at the hotel around 10 p.m. Mary-Kate and Jonah sat close together and seemed totally into each other. They were both wearing plaid shirts that almost matched. It was the cutest thing.”

“From what I saw at the Chateau Marmont,” said another source, “Mary-Kate had forgotten about Nate and seemed totally enamored of Jonah. And he couldn’t keep his eyes off her, either.”

I don’t like this at all. Not that I really care who Trollson is doing the dirty with, but the mental image I get of tubby, sweating Jonah laying all up on little tiny MK is very disturbing.