The tingling is back again, this time coming from your butt. That same invisible force massages and pinches your butt, rounding your cheeks and hips out further and wider until they are stretched against your pants. Distracted by the adrenaline-pumping ride, you're very much oblivious to your changes as your tailbone twitches and pushes out. A short and tuffed tawny tail joins the process of trying to burst your pants off, straining tightly against the fabric. Every slight movement causes your sensitive hips to get squeezed and rubbed from every single angle, making things worse and worse as you start to involuntarily grind against your seat.
"Hnngh..."
Your aroused moan is thankfully muffled by the screams and wind howling around you, as you try to squirm and not-squirm at the same time. Your mind's a mess from all the hormones running through your veins, confused by the emotions of both thrill and lust. Not even the roller coaster ride or that weird tingling feeling is enough to shake you out of it, as it reaches the final hill and starts to tip over - You couldn't careless about it or what it's doing to you, you just want to quench that building heat between your loins.
You struggle to come up with a decision...