Another attraction Shrunk in an Amusement Park chapter 14 by Louka31

Tina says “Hang on, I have an idea.” The girls get off her lap, and Tina stands up. “Where is he?” Crystal asks, but quickly notices you stuck face-first against Tina’s right ass cheek. She reaches over and taps you, squishing you into Tina’s ass. “Here he is!” She exclaims, and peels you off Tina’s pants. Tina takes you in her hand, and walks over to a roller coaster. There is no line, and she walks right up to the huge coaster. Once you’re close, you see it’s one of those rides you lie down in, and a cage lowers itself around you.
Tina and her friends get on the ride, and as Tina lies down she jams you against her right butt cheek with her finger, sticking you there momentarily. As the seat on the roller coaster is automatically lowering towards you, you begin to reform. You manage to peel your torso off her very thin pants, but you are too slow. The seat bumps into you, and keeps going. You are slowly pushed face first into Tina’s ass as the hydraulic powered seat gets tight against her rear. It slowly decelerates, but not until you are being completely crushed against her massive ass, completely pinned between the seat and her butt.
Tina giggles, and uses the handles by the front of the ride to push herself backwards, mashing her ass into you more and more. She bounces against the seat, jiggling you against her ass, as you can do nothing but struggle.
Suddenly, Tina’s ass is smashed against you as the ride quickly takes off. As the ride climbs the first incline, Tina is almost sitting on you, it’s so steep. Her weight is flattening you against the seat. When the coaster reaches the top, and starts to go over the precipice, Tina shifts forward on her platform, leaving you stuck to the seat and giving you an inch of space to breathe. Tina and her friends scream with joy down the huge drop, but at the bottom Tina’s massive ass SLAMS into you as the roller coaster pulls out of the dive, and she begins to laugh.
Every dive shifts her ass away from you and every rise smashes it back against you. By the end of the ride, Tina is having trouble stifling her laughs as she bounces her ass some more against your flattened body.

As the ride comes to a stop, Tina gives her body one final shove and presses you back into the chair. You felt the chair pull back and the pressure was suddenly released. You had never felt more relieved, but that relief would be short lived.

Tina and her friends stood and walked away from the ride. You kept expecting your body to reform so you could get away, but after the beating you had taken so far, your body wasn't near as quick to reform. You tried to struggle to push yourself away from Tina, but you weren't moving. What you didn't know was that Tina and her friends had refocused all of their attention back on you. You heard the girls giggling from behind you (as your frontside was completely plastered by Tina's backside), when suddenly and without warning, one of the girls gave you a quick SMACK. The pain was stinging, and you felt the vibrations move through your body as it shook Tina's right cheek. You let out a muffled groan and that causes the girls to laugh even more.

Finally, one of the girls peels you off of Tina's butt and you see 5 hungry faces looking over your flattened body as one of them holds you in her hands. You're unable to move or get away and you know you're at the mercy of these 5 women.

One of the women speaks first, and she has a huge smile as she says "Well Tina, you've had plenty of time alone with him. I would sure like to find out what he thinks of being plastered to MY butt for a little while."

Tina of course doesn't want to give you up, and the other girls all want their turn. How do they decide?