The lesson to be learned from these photos of Lillian Tesh is: Don't be surprised if the woman you just saw at the library or the bookstore...the one who looks so straight-laced and shy with her Sunday school teacher glasses...has a butt-plug shoved up her asshole.

Say what?

Yes, Lillian Tesh, who's 51 years old and reminds us a little of Mary Poppins, is wearing a butt-plug, and you know what that means: She's getting ready for anal sex. Of course, she gets it. A woman like Lillian always gets what she wants.

"I know what I want and I go and get it," Lillian said. "I'll go to a club and scour the room for someone who I'd like to get fucked by, then I'll make my moves as far as introducing myself. I know what I want when I see it. People think I'm pretty straight. They've never seen my wild side."

They're seeing it here, even though in the opening photos, Lillian looks like a schoolmarm with her glasses and her pink sweater wrapped around her neck. But underneath...stockings and a garter. Her sexy lingerie includes a bra that conceals nothing and sheer panties. And, of course, that buttplug.

"I'm really into anal sex," Lillian said. "I'm into all kinds of sex!"

Who would have ever guessed?