Andy Cohen once interviewed billionaire Oprah Winfrey and in the 2013 interview, he famously asked her if she’d ever “taken a dip in the lady pond” on a 2013 episode of his Watch What Happens Live talk show.

Speaking with Entertainment Tonight, he opened up about the interview.

“That’s probably one of my few regrets,” he said.

Oprah responded to Andy’s questions by denying even dipping her toes in the lady pool.

“It meant so much to me that Oprah Winfrey did the show,” he added. “It’s gone brilliantly and I turn around and ask her if she’s every had sex with a woman. I mean, couldn’t I leave it alone?” 

According to Gayle King, Oprah had no idea what Andy meant when he answered the question.

“Gayle King told me later that week that Oprah didn’t know what I meant by ‘the lady pond,'” he said. “I thought I explained it pretty well there, but listen, I was so grateful that Oprah did the show and I still am. That remains, I think, my favorite episode.”