Exclusive: Chelsea Handler warned by NBC brass not to crack dirty Al Roker and Matt Lauer jokes

Chelsea Handler got in deep doo-doo with Comcast brass over a joke about Al Rokers unpredictable bowels that also smeared Rokers Today colleague Matt Lauer, sources tell us.

Roker recently confessed to Dateline that he once pooped his pants at the White House, and news of the accident, ahem, exploded online.

Handler responded with a zinger on her E! show, Chelsea Lately, saying, This isnt the first time a Today show cast member was in the news about this sensitive subject. For years it was common knowledge that Matt Lauer spent every morning [s - - ting] all over Ann Curry.

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Chelsea Handler

But Handlers bosses Comcast owns NBC and E! were apparently not as amused as her audience.

Chelseas writers were warned to lay off Matt, says a source close to the show. They dont want them making more fun of Matt and the Ann Curry situation right now. Lauers been a public target since Curry was canned as co-host of Today and replaced by Savannah Guthrie.

This isnt the first time Handlers slung some comedic excrement Lauers way. When Lauer made what seemed like a dig at Meredith Vieira during a Today segment on cankles back in 2009, Handler fired back with a shot at him.

In November, the comedienne canceled an appearance on Today by calling in hours before she was supposed to be on the show, due to what her rep told us was food poisoning.

But Handler said on Late Night With Jimmy Fallon later the same day, That was a lie. I wasnt sick, and she apologized while getting in a swipe at Today hosts Hoda Kotb and Kathie Lee Gifford, by calling them Hoda Kota-ba and Kathie Lee Jifford.

An E! spokesman told us about Handler a! nd her writers being warned about Lauer: This is absolutely false, and no such request was made. A rep for Today declined to comment.

And Mr. Soiled Slacks himself meanwhile said yesterday that hes stunned that his messy White House secret has become such a Web sensation.