Analingus

"...and then I spread my legs, and I thought she was going to lick my pussy, but instead she ran her tongue down my taint and started to swirl it around my ass!" Sue Storm said.

Dr. Stone leaned forward a little, teacup in hand. "Were you clean?"

"Of course!" Sue said. "You've seen our costumes. Bathroom breaks are difficult enough during adventures. Whenever possible, I clean myself out ahead of time, and I do it before a massage too. Just want to be...clean, you know?"

The heroine shook her head.

"Anyway, so there I am, laying on my back on the massage table, my thighs over Nairobi's shoulders, and she's licking my butt. Just really pressing that hot tongue against my little hole. At first it was just weird, and I clenched up, but she kept squirming and pushing, and...and after a little while I **** myself to relax and...and she pressed her tongue into my butthole."

The Invisible Woman squirmed, as if reliving the moment. Her hands were clenched into fists on her knees.

"I'd never had anyone...lick me down there before," she said quietly. "Never even thought about asking Reed to do that. And she was just so, so eager about it. I could feel her wiggle around in there, her teeth pressed against my ring as she pushed deeper, and the heat just grew and spread from my ass outwards."

Dr. Stone's smile seemed etched into her face. "Go on, she said."

"There...there isn't much to tell. She started to rub my clit with her hand. I was panting by that time. Breasts heaving. Nairobi just kept licking and kissing my asshole, and stroking my clit, and I was getting more and more excited with each moment. Until...until I just couldn't take it any longer."

The Invisible Woman's face was flushed, and she held herself rigid.

"You came," Dr. Stone said. "With your ass?"

"I mean, not just from that. I think it was mostly Nairobi playing with my clit, but...but her tongue was in my butt when I..."

"Well, that's marvelous, Susan. Simply marvelous. Wonderful that you're trying new things," Dr. Stone said, and she leaned back, so that the sunlight through the window caught her glasses in that odd way that made them circles of light, as if her eyes glowed from within. "In fact, I think you should explore this new sensation further."