What;s the worst experience that has happened to you on a Roller-coaster?

ride stopped on the first climb//// to take a camera away from a rider

terrifying but most thrilling Top Thrill Dragster

My phone flew off of Desperado. I've never been on a terifying ride, but my best roller coaster experience, I have to say would be Hollywood, Rip, Ride, Rockit! Awesome ride! Oh yeah!

Well it didn't happen on a rollercoaster but it happened on soarin' at disneyworld, which is sorta like a thrill ride.

After I rode mission space for the first time i kept hyperventilating and i rode soarin' right after. Towards the end of soarin my heart stopped for about 5 seconds and i had a panic attack, i thought i was going to die haha.

First experience: Lost my breath, couldn't breath, I was terrified.

I would have to say roller coaster :) I went on it once, and that was it.

I lost my sandal on a ride in Busch Gardens. Was my first coaster. But I got it back haha.

One of them gave me a horrible back ache once. I don't know what I did, but I either turned my body and angled my back the right way right when the coaster hit one of those really rough turns and BAM. It freakin felt like I had a knife in my back the rest of the day.

i almost fell out on space mountain. then again i was like 6 and probably shouldn't have been on in the first place

My school went to six flags. I threw up in front of my teacher.