Old MacDonald Quiz Show

A Hoosier, a Kentuckian and a West Virginian were on a Hollywood TV quiz show. The host asked them to complete the sentence: "Old MacDonald had a ..."

The Indianan said, "Old MacDonald had a carburetor."
"Sorry," said the MC. "That's incorrect."
"Old MacDonald had a flat tire," said the Kentuckian.
"Wrong," said the host.
"Old MacDonald had a farm," said the West Virginian.
"That's correct!" shouted the MC. "Now for $200,000, spell farm."

The West Virginian thought hard and then spelled carefully:

"E-I-E-I-O."