Gilbert McGee, average, if fairly well-off, high schooler

As usual, Frankie came over at 3. Mrs. McGee kindly took her jacket as she stepped out of her boots. The mirror on the adjacent wall glistened, the front door swinging closed. Frankie bent down a little to see her pretty-faced, if slightly rosy, reflection greet her back, and swished a line of bangs with her finger before proceeding in. Coming down was the class sweetheart, outgoing goofball, up-and-coming musical soul-- and, most specially of all, her good friend for the past two years.

"Hey Lil!"

"What's going on, gurl?"

As the two hugged and giggled about the snow on Frankie's lashes, Frankie asked how Gilbert, Lilian's brother, was doing.

"He's alright. Just a few sniffles. We went to an antique store today, and all he got was this discounted book. It was pretty funny, we were all kind of teasin' him about it."

Formalities out the way, the two proceeded upstairs and settled in Lilian's room. Frankie was mostly just glad to be out of the cold.

"Ah, crap. FREEZING out there."

"I knnooow, frosty. Too frosty!" Lillian suddenly looked up from the tablet she was using. "Hey, how about this? You take off your pants, and I'll take off mine. Then we can squish up! Get warm together."

The classic thigh-thermal. Frankie thought that was actually a good idea.

Removing her scarf, the almond-skinned girl pushed her pants down with two thumbs, leaving her in her puffy jacket, socks, and pink panties. Her legs and underwear out in the open for all to see. Of course, it was just her and Lillian, thankfully. Anybody else and it would be a different story.

Lillian had removed her own casual pants, which had fit quite nicely over her plump butt, so put up a slight fight now. 'Twas a behind that was scandalous on her slender figure--it almost seemed random on her body, like it didn't belong there. Which couldn't have been, considering the girl's very serious Pilates regimen, the one she stuck to each day like the world counted on it. It explained her toned thighs and lower half in general. Same went for Frankie herself, really--while she didn't have as big a derriere, she was blessed with naturally long and well-shaped legs. The same ones that carried her to Lilly's bed.

"Alright, time to press up," Frankie said with a wry smile. The two girls then wrapped an arm over the other's shoulder, and snapped themselves to the other's body, causing their thighs to ripple at the collision. A loud SMACK resounded across the room.

"Now for some good 'ol fashioned ruuubbin'." Melodically, Lillian tittered out another silky giggle as they proceeded to slide their thighs against each other. Second by second, they followed a steady push and pull; one pulling their leg in as the other pushed their leg forward, just like one would with their hands to generate friction, until Frankie started to feel the warmth between them. Admittedly, her good friend's nicely toned thigh was already incredibly warm to the touch--compared to her chilly form, when their legs touched, Lilly's was a campfire in smooth, female-skin form. "And then STRETCH!"

Suddenly, as if pulling a car into second gear, the two girls brashly stretched their legs out together, Frankie's socked foot side by side with Lillian's bare, nail-polished toes. The two pulled their legs away from the other, letting that position hold for a few seconds. Only to crash their stalks back against each other, calf against calf, thigh against naked thigh.

It was all 'thigh-thermal' routine.

Smack, smack, smack, smack!

"Mm, nice one," Frankie smiled wide as she banged her leg against Lillian's for the umpteenth time.

Their two legs came into contact again before they pulled them both back in, bent at the knees, then stretched them out once more, then back and again, the two of them now performing a sort of choreography of synchronized motions. Funnily, not unnoticed by Frankie, this would probably have been quite a show were this hued to any other purpose but body heat generation. The way they were kicking and swinging their bare legs like so, it was like a flamboyant exercise some snot-nosed kid would have written up just for laughs.

Thankfully, only they were the ones laughing here.

Meanwhile. in the room a few doors down....

A young man gazed upon the book sprawled across the desk, then back up. Playing was a video feed, one that shouldn't have been possible, of his sister's bedroom. In it was her and her friend Frankie, both of them bottomless barring their underwear, and conducting an absolutely ridiculous-looking dance-troupe routine off the edge of Lilly's bed with their legs.

The book, the one that the guy at the antique store had instructed him on using while the rest of his family perused dusty chairs and broken jewelry, looked back at him, the lines he had scribbled glowing under the light of the monitor, as the snow beat against the window. On its pages were just a few scrawled words.

Lillian McGee has very well-rounded, big buttocks.

She also has a lot of hobbies that accentuate it, which she dedicates as much of herself to as to her singing/music.

It is normal among girls to get warm by going pantsless and rubbing their thighs together instead of using their hands, etc.

The above process is known as the 'thigh thermal'. It actually involves numerous stages that sort of resemble a Rockettes number, leg swinging and all. It comes natural to any female.

I have a direct video feed of Lillian's bedroom on my browser.

A pencil rolled off the edge of the desk, but McGee caught it midway.