Sharon Osbourne has dropped her share of bombshells on “The Talk”, but she had a big one to unveil on Thursday’s edition of the Global daytime talk show.

According to the 66-year-old host, Simon Cowell cost her a gig as a judge on Fox’s surprise hit “The Masked Singer” before firing her from U.K. singing competition “The X Factor”, and explains the shocking reason why.

“I’ve turned down to do the judge on the ‘Masked Singer,’” Osbourne told her co-hosts, who audibly gasp at the news.

RELATED: Sharon Osbourne Hits Out At ‘Pain In The A**e’ Simon Cowell, Accuses Him Of Underpaying Her For The U.K. ‘X Factor’

“I was signed on to do another show at the time. I was signed to go to England, and then Simon Cowell changed his mind and thought I was too old,” she continued. “I was under contract and couldn’t do it.”

She added: “Simon goes, ‘She’s old. We need somebody young.’ So if you want young, fire yourself and get rid of those man [boobs].”

RELATED: Sharon Osbourne Announces She Is Pulling Out As ‘X Factor’ Judge

She wrapped up by cheekily addressing Cowell directly. “Call me tomorrow,” she quipped, “we’ll discuss it.”

“The Talk” airs weekdays at 2 p.m. ET/PT on Global.

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This Week On TV: March 25-31