Jeffrey Ross attempts Joe Paterno, Aurora shooting jokes at Roseanne roast

They say comedy isn't pretty. On Saturday, some may have said it was downright ugly.

Jeffrey Ross, roastmaster general for "The Comedy Central Roast of Roseanne (Barr)" showed up on the red carpet as Penn State football coach Joe Paterno, flanked by two young-looking males. Showing up in costume is nothing new for Ross. At last year's roast of Charlie Sheen, the comic, who tends to lean towards the theatrical, arrived as slain Libyan leader Colonel Moammar Qaddafi.

As if the sight of Ross as Paterno wasn't shocking enough, Ross treaded on very dangerous comedy territory when he turned to Seth Green, who was sitting on the dais and dropped this 'zinger':

"Seth, congratulations. This is actually a great night for you... You haven't gotten this much attention since you shot all those people in Aurora. ...I'm kidding. You are not like James Holmes. At least he did something in a movie theater that people remember!"

Soon after, Ross admitted to NBC News that his approach was certainly no holds-barred. But does he think he crossed the line? "Yes, I crossed a line, and that is what the roasts are about," he said. "That's what Roseanne is about — unapologetic comedy. If I had held back, I would have done her a disservice."

TMZ reports that the Ross joke will be edited from the broadcast when it airs Sunday, Aug. 12, at 10 p.m.