Smithers: Uh...no. They're saying boo-URNS, boo-URNS
Mrs. Burns: (To the crowd) Excuse me, are you saying BOO or BOOURNS?
Hans Moleman: (to himself) I was saying boourns.
An exclamation, used in disappointment or excitement
Obviously, "boo" and "Boo-urns" are two different and mutually exclusive words.
"Are you saying 'boo' or 'boo-urns'?" - C.M. Burns, The Simpsons