gentler

Erin grabbed Cindy's thong and yanked it. She yanked it up as hard as she could. She kept going until the waistband was even with Cindy's bra strap.

Cindy grunted as her thong wedged in up her crack and split her wet pussy lips.

"Since I'm in a good mood," said Erin, "this will be your only punishment...for now. You will leave these panties wedge up your ass like this until I say other wise. If I catch you with this waistband any lower than the middle of your back, it's your ass!"

"Yes, ma'am," Cindy said meekly.

Erin gave Cindy one more hard smack then shoved her off of her lap.

Cindy got up rubbing her ass and looking at the floor.

Erin got up and went back to her desk.