This is the article that confirms the rumors that Bill Murray’s on-screen speech to his dead superior, Piedmont (Played by Brian Doyle-Murray) were words he had already spoken about recently departed friend, John Belushi.
Bill Murray’s Film Farewell to Belushi
‘He was a slob. Did you ever see him eat? Starving children could fill their bellies on the food that ended up on his beard and clothes. Dogs would gather to watch him eat. I never understood gluttony, but I hated it…I hated that about you. He enjoyed disgusting people—being disgusting—that thrill of offending people and making them uncomfortable. He was despicable. He will not be missed.’