OWWW!
I wiped out on rollerblades less than a minute after putting them on for the first time (out of the store). I wasn't familiar with the brake method and tried to stop like I was on ice-skates..by throwing them 90 degrees to the direction I was travelling. Ashphalt doesn't allow you to slide to a stop on it in the same way as ice does I found out.
Luckily I had bought wrist guards...if I hadn't I would have broke both of them for sure.