"'Cause I don't even think of me that way," Spelling explained. "I don't think anyone would ever be like, 'Wanna see that!' I'm a mom of four! At night we're in bed by 9:00, watching TV."

Well, sometimes people want to see it to believe it...

But Spelling also clarified that, while it made for perfect book fodder, she and her "costar," hubby Dean McDermott, never wanted anyone to actually watch them have sex.

"I'm basically telling a story about the friend that kind of surprised us—we thought they were a friend—and they went and took some personal things off our computer," she revealed.

"I call it a 'sex tape' because my husband and I did have that moment where we filmed an intimate thing. I don't know, it's not a," Spelling lowered her voice, "sex tape."

"It's a 'moment tape,'" she added, sounding perkier.