Teaching Lisa Sparkle

Lisa spotted her new student the second she walked through the studio door. Cindy's tits strained against a thin white tank, hard nipples already trying to push through. Lisa's mouth went dry. This one wanted to be touched. This one was ready. They didn't make it past the mats. Cindy lay back, legs open, breathing fast. Lisa worked two fingers into her first. The girl's cunt clenched around them, soaking them instantly. She moved slowly, watching Cindy's face, then added a third. Then a fourth. Cindy didn't flinch. She arched toward Lisa's hand, legs shaking. When Lisa tucked her thumb and started working the whole fist inside, Cindy grabbed her own thigh and held it wider. The stretch made her whimper but she didn't stop pushing down. Lisa's knuckles slipped past the resistance and her whole hand disappeared, wrist deep. Cindy came without warning, body snapping tight around the intrusion, heels digging into the mat. Lisa held still, letting the spasms pass around her fist. She eased out slow. Cindy blinked up at the ceiling, flushed and wrecked. She was quiet for a moment, then turned her head. "Do it again," she said.