Bob Saget was a notoriously vulgar comedian. His fatherly Full House role was often an area of conflict for him.
While everyone tried to roast Bob Saget with equally vulgar jokes, Norm Macdonald roasted him with clean dad jokes. Very few comedians understood what was happening. Bob Saget got it. Other comedians got it. But the crowd didn't. You never heard that because the TV edit added laughter when there was very little, which took away from the hilarious nature of the awkward room.
I'm thankful Comedy Central released this full clip without the fake laughter so we could hear the room and realize just how much of a genius Norm really was.