Here's what: Watch What Happens Live with Andy Cohen is a decade old!

It's hard to believe, but it was 10 years ago, on July 16, 2009, that Andy Cohen made the leap from Bravo executive and part-time Real Housewives reunion special wrangler to full-time talk show host as the ringleader of the biggest party in late night. And nothing has really been the same since.

In the decade since the show's debut, it's become known as the place where high meets low, where Real Housewives regularly rub elbows with their A-list fans. It's a place where everybody's just a little bit drunk, courtesy of the bar on-set, and willing to throw a little shade and spill a few secrets.

"I think the most rewarding part about doing the show is not only am I legitimately having fun every night, it's just the audience response to it. And them feeling a part of it, and them feeling they're just involved. I mean, I'm having a party and I'm inviting everyone to it," Andy recently told E! News, adding that he believes the secret to WWHL's success is its authenticity.

"It's the only live show in late night. We make mistakes, I make mistakes," he continued. "It's always an authentic experience."

As we raise a glass to WWHL and make Andy our very own Mazel of the Day on this special anniversary, let's take a look back at 10 times when the experience got maybe a touch more authentic than he ever bargained for. These are the 10 craziest moments from Watch What Happens Live's first decade on the air!

NeNe Leakes, Kim Zolciak-Biermann, Watch What Happens Live

Charles Sykes/Bravo/NBCU Photo Bank via Getty Images

Andy Cohen, Oprah Winfrey, Watch What Happens Live

Charles Sykes/Bravo/NBCU Photo Bank via Getty Images

Andy Cohen and Shaquille O'Neal, Watch What Happens Live

Charles Sykes/Bravo/NBCU Photo Bank via Getty Images

Whoopi Goldberg, Watch What Happens Live

Charles Sykes/Bravo

Susan Sarandon, Watch What Happens Live

Charles Sykes/Bravo/NBCU Photo Bank via Getty Images

Lady Gaga, Watch What Happens Live, WWHL

Bravo

Teresa Giudice, Joe Giudice, Watch What Happens Live

Charles Sykes/Bravo/NBCU Photo Bank via Getty Images

Lindsay Lohan, Watch What Happens Live

Bravo

Brandi Glanville, Jeff Lewis, WWHL, Watch What Happens Live

Bravo

Andy Cohen, Anderson Cooper, Watch What Happens Live

YouTube

Mazel tov, Andy!

Watch What Happens Live airs Sunday-Thursday on Bravo.

(E! and Bravo are both part of the NBCUniversal family.)

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