It’s the most Bunny-ful time of the year.

The blonde-haired actor who played wide-eyed 9-year-old Ralphie Parker in “A Christmas Story” has his own naughty Christmas tale to tell — watching his movie at the Playboy Mansion alongside Hugh Hefner and his Bunnies.

“He was a huge fan of the movie … I was invited up there for a screening one time, which was actually very cool,” Peter Billingsley told The Post.

The Playboy founder had an annual tradition of playing the beloved holiday film at the famed Los Angeles party house for his Bunnies — and when Billingsley — who, ironically, wore a bunny suit in the movie — came of age, he joined in the Yuletide revelry.

“I was 18. It was very fun,” said Billingsley, 54.

However, he kept what went on that night as tightly wrapped up as a prese

See Full Page