VIDEO: Piers Morgan Second Fiddle To Simon Cowell

Simon Cowell may have made America's Got Talent judge Piers Morgan famous in America, but that hasn't stopped him from talking smack about his friend and boss. 

It's no secret that Simon Cowell uses botox to stay prim and proper but many may not know that his colleague and fellow Brit is the one who outed the outspoken American Idol judge. On an appearance on The Tonight Show with Conan O'Brien Thursday night, Conan O'Brien revealed it was indeed Piers' loose lips that revealed Simon's secret.  Conan questioned Piers on his reason for the revelation after Simon helped bring the former Daily Mirror editor to fame. 

"Well, it's pretty obvious." Piers responded.  In regards to whether Simon was upset afterwards, Piers made it clear that Simon always wins in the end as he learned recently. 

"He's really irritating, Simon.  He always has the last laugh."

After Britain's Got Talent and the Susan Boyle phenomena, Simon took Piers out to celebrate at the famous strip club in Britain, Stringfellows, a favorite jaunt of Simon's (recently took Ryan Seacrest in June) where he apparently has his own "thrown" as Piers described.  Piers sounded a bit jealous as he described the swarms of girls flocking to Simon to "pay homage" while he sat at the other end of the table. 

"He's got 20 woman around him, all absolutely stunning and taking their clothes off.  And I'm at the other end of the table with a young lady from Poland who wants to recite Eastern European poetry.  At that point, Simon looked at me and winked and I thought this is the difference between his career and mine.  I'm at the other end of the table and always will be."

Watch more of Piers' sour grapes in a clip from The Tonight Show.

America's Got Talent airs Tuesdays and Wednesdays at 9pm on NBC.