The big slide

Suddenly Monica saw something too good to pass up.

"Ooh! Lauren, we have to do this ride, it's my favorite!" Monica said.

"I don't want to ride any rides... HEY!" Lauren yelped as Monica tugged her forward. Helplessly Lauren stumbled after Monica, trying to keep her underwear hidden (and failing). Monica pulled the helpless Lauren along towards what appeared to be a giant slide... leading to a pool of water? Before Lauren could discover more Monica yanked her towards the line ascending a staircase to the top of the slide.

Lauren looked behind her. The people in line, not to mention a crowd of gawkers gathering around, were plainly looking at her panty clad backside. Lauren cringed, pressing both hands over her butt in the vain hope of hiding it.

Monica led Lauren up to the top of the ride. Lauren watched the person before her go down the slide, shoot up at the ramp at the end, and fly into the pool of water with a laugh.

"Oh no no no no." Lauren stammered, pulling backwards. "I don't want to do this."

"Come on Lauren it'll be fun!"

With that Monica pushed Lauren, who stumbled and fell down onto the slide, instantly getting pulled away by gravity.

"Wait, you need a sack to ride!" The employee said, holding out a burlap sack to sit on. That was the last thing Lauren heard before her slide began...