A bumpy ride

The three girls entered the waiting line and after a short time two men with well-drawn muscles and wearing just a thong. The girls noticed the bulge in their underwear and were quite distracted from the visitor leaving the ride.

"You can take your seats." Said one of the guys, showing the vehicle.

The thing was hanging on a rail, with a plate to put your back against, with the safety bar above and a triangular seat at the bottom of the plate.

"That doesn't look comfortable..." Admit Dina.

"That kind of stuff rarely is." Said Vanessa.

"I don't see why it's called analoster, you were right Vanessa." Noted Helena.

The row is three seats large which puts the three girls next to each other. They sit on the ride and already feel their vagina pressed against the seat. No girls comment on this, but Vanessa could see that Helena was turning red.

"Put your butt the further possible against the plate and your back along with it." ordered one of the men.

The girls adjusted their seats and the man pulled down the safety bar. As soon as the metallic sound of the bars secured is heard, the girls feel the back of their pants being taken away and their panties with it. All three make a sound of protestation when a thin object enters their back door and starts to expand.

"I take it back! I hate you, Vanessa !" Yelled Helena.

"OooOoh fuck !" Just answered Vanessa in a half surprised, half aroused tone.

And the ride started. It climbed at first, making the inflated dildo go far in their ass thanks to their own weight and gravity, and the triangular seat started to vibrate. "Oh my God !" "Holy shit !" "Anh, my ass !" Shouted the girls. Helena couldn't believe that she was losing her anal virginity to a machine, no to lose her anal virginity altogether. It was disgusting and shouldn't be used for sexual intercourse! Vanessa wasn't at her first time to have something up in her ass, she was putting stuff in there for a while now and quite loved a good anal fucking from time to time. So the ride was quite pleasant for her from the start. Dina barely had sucked a cock in her life, just to try, so she wasn't ready for this. She could have appreciated the vibrator if it wasn't for the foreign object in her ass.

The ride arrived to the climax of the rail and throw itself in the almost vertical downhill. The three girls almost got the dildo out of their ass, its shape had changed to a series of bumps making the anus dilating more or less as the object came out. Even, as uncomfortable as it was for the two virgins, with the vibration of the seat, they couldn't ignore the pleasure it gave them at that moment. Vanessa almost got her first orgasm on the spot.

After that, followed up and downs, turns and even a loop. The dildo was going in and out regularly changing form from time to time for better sensations when the seat was massaging their pussy and clit with various vibrations. Through the end, Helena couldn't deny the pleasure it was giving her and she even had an orgasm in the last turn. She could see Vanessa enjoying too much herself and Dina being redfaced and moaning with each move of the ride. Vanessa enjoyed a lot the ride, the vibrations, the toy getting in and out, she was soaked wet and had three orgasms during the ride. She didn't even remember much of it. Finally, Dina, surprised at first was now totally enjoying the pleasure of the ride. She could see the two sisters, one having the time of her life and the other trying to stay poker face without much success.

The ride arrived at its end and the anal dildo deflated and retracted, the seat stopped vibrating and the safety bar went up, freeing the girls. They left, staggering on their way out. None of them could speak for at least a minute. Pretty much when Helena noticed the hole in each of their pants showing their naked butt marked with "anal" on the left cheek and "trained" on the right.

"Are you kidding me ?" She shouted.

"What ?" Said Vanessa, annoyed.

"We have anal trained marked on our butts and nothing to cover it! We look like whores !" Helena yelled.

"Calm down, we don't really stand out from the place..."

"What if it's permanent !"

"It's not permanent."

"Like it's just a normal ride !"

"Well if you're not happy about all this shit, leave and shut up !"

Helena didn't say another word, looked at her sister and left.

"Shit..." mumbled Vanessa.

"Should we follow her ?" Finally said Dina, after staying silent during the quarrel.