sentence: A skater girl in a white t-shirt and shorts tries to jump with her skateboard and falls backwards hitting her head. sentence:   Two more skaters head around a curve, but one plows straight into a hay-stack, though luckily helmet-first. sentence:   Another helmeted skater tries a hand-stop, and does stop, though unfortunately his skateboard does not. sentence:   After a few more skating mishaps, the last performance is by a skater who doesn't feel the need for safety equipment and while headed straight down a hill, he flips off of his skateboard and spends several minutes checking on his various road-rashes.