Jenny McCarthy and her son Evan Credit: Jason LaVeris/FilmMagic

Jenny McCarthy's son Evan is not even a teenager yet and he's already a little Casanova!

"I brought him to the Playboy Mansion Easter Bunny hunt for the first time, and he was out of his mind," McCarthy, 39, told Us Weekly at The London hotel Wednesday at her Pose for a Cause event with Danskin in L.A..

The event supported McCarthy's charity, Generation Rescue, which is an organization dedicated to the recovery of children with autism spectrum disorders. Evan, 9, was diagnosed with autism in 2005.

McCarthy said she lost Evan for "probably 45 minutes" in the Mansion -- ultimately finding him hanging out in the infamous Grotto.

"And I went in there and he's laying there going, 'Hey.' And I said, 'Yeah?' and he said, 'You know I like chicks, right?' And I said, 'That's great!' And he goes, 'I like pretty chicks.' So I said, 'Awesome!' "

Evan then announced, "I just thought I'd come out and tell you."

How did McCarthy react? 

"I'm like, Oh. My. God! He's 9!" she exclaimed. "So you can imagine, if Hef's parties are still going on in a few years, I'm in trouble!"

And really, the trouble has already started! 

"He's got two girlfriends…one's here," the mother revealed. "She's 29."