Bette used her arms to push herself off the bench and onto the floor. She laid herself slowly onto her back and with effort lifted her legs up so that her feet were flat on the bench, which left her hips slightly lifted off the floor.

"See how your legs are supporting your body weight?" Tina asked.

"Yeah, it’s hard," Bette said.

"Good, now slowly I’m gonna have you raise your hips higher so that your legs support more of your body," Tina said, "and once you got it I’m gonna put pressure on you and you have to keep holding yourself up."

"Okay."

Tina smiled and pushed Bette’s feet further apart. She sat in between Bette’s feet and put her feet on either side of Bette’s torso. Bette’s eyes widened. She had a clear view of Tina all open and obviously wet.

She gulped audibly and Tina smirked, "raise your hips as high as you can. You should be lying on your upper back and holding yourself with your feet."

Bette nodded and lifted herself up. She groaned as her body immediately started trembling at the pressure. Her legs were wobbling and Tina gripped them tightly for support.

As Bette stabilized herself, Tina slowly let go of her legs. Bette grunted but kept her balance firmly.

"Good, ready for the pressure?" Tina asked.

"Yes," Bette said determinedly.

Tina smirked and leaned forward slightly. She brought her hand to Bette’s center and pushed two fingers into her, in a downward’s motion.

Bette’s entire body felt the heat, especially her thighs which started trembling.

"Hold yourself baby," Tina said thrusting her fingers in and out slow and hard.

"Oh God!" Bette moaned, "that feels ssssoo good!"

Tina smiled and quickened her pace. Bette’s back was arching and soon she didn’t even need to concentrate to hold her body up with her legs. Her only focus was her release and she was feeling the burning sensation crawling down her entire spine.

Bette dropped her jaw in a silent scream and started trembling out of control. She tightened around Tina’s fingers and came hard releasing a hot liquid that dripped down her ass and back.

Tina moaned and removed her fingers. She brought them to her mouth and sucked them dry before helping Bette off the shower floor.

"Wow," Bette said standing still as Tina grabbed the sponge to bathe her.

"Yeah, you invented it," Tina said, "it happened a while ago. We were having a picnic with the gang and we played volleyball. Well there was a hole in the ground that was covered in grass, I stepped in it and snapped my ankle. I was in crutches for two months and when I could finally walk again it was so weird. You invented this exercise but I only could use the messed up leg."

"Did it work?" Bette asked.

"We did it a few times and it was good as new."

"Well," Bette said, "in that case we need to do this exercise all the time."

AN: Read Author’s note please :)