Snoop Dogg's Roast Was So Good, He Coughed On Weed!

Snoop Dogg laughed so hard at his comedy roast he literally couldn't contain the weed.

The rapper got roasted for Russell Simmons' first-ever "All Def Roast." It all went down Wednesday night at the Avalon in Hollywood, and French Montana, T.I., Michael Rapaport, Wiz Khalifa, and Christina Milian were among the celebs enjoying the burn.

You gotta check out T.I.'s performance ... Snoop laughs so hard he belts out a plume of smoke.

And he wasn't the only one sparking it up.