04/30/2012 06:32 am ET | Updated Apr 30, 2012

'The Celebrity Apprentice': Clay Aiken Clashes With Dayana Mendoza (VIDEO)

On "The Celebrity Apprentice" (Sun., 9 p.m. ET on NBC) Clay Aiken was teamed up with Lisa Lampanelli and Dayana Mendoza for a challenge in which they had to write and perform an ad jingle.

Aiken couldn't hide his increasing frustration with Mendoza’s bumbling input and eventually blew up at her. "I'm a grown-a** man!" he said. "I swear to god," he told Lisa, "we're about to go at her together!"

In the end, it was boardroom regular Dayana who paid the price for their failure and was told "You're fired!"

Who'll be fired next? Find out on "The Celebrity Apprentice," Sundays at 9 p.m. ET on NBC.

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