I called Dian Hanson, the former editor of Leg Show and Juggs, another woman who’s has seen a lot of women up close.

“Of course there’s vaginal variation, and probably as much as penile variation,” she said from Los Angeles, where she’s an editor at Taschen books.

“I think women can pretty smugly go about their lives not worrying about it,” she said. “Because, historically, guys are so happy to be allowed in there that if the walls are a little loose, they’re just going to adjust their thrust and think they have a small penis.”

She did say that heavy women tend to be tighter.

“You’re going to see the most cavernous ones on little, tiny, slender women,” she said. “This is where, to the pornographer, these things become apparent: You say to the girl, ‘O.K., bend over, put your chest on the bed and let your butt stick up in the air.’ These little skinny girls? That thing will blow up like a balloon. She gets in that position, her belly drops forward—you can hear the suction. It will open right up.

“Let’s hear it for the fat girls on this one!” she added.

Tad Low, the co-creator of VH1’s Pop Up Video, told me he was once with a super-skinny model type and it was “cavernous.”

“I couldn’t feel it. It numbed me out completely,” he said. “It was like you woke up on the Amtrak after sleeping on your arm—that’s what it felt like.”