Ключевые слова: accident, away, balance, blood, boy, california, caucasian ethnicity, challenge, copy space, crash, crazy, dangerous, down, extreme, falling, front view, funky, health care, helmet, hobby, humor, injury, innocence, insurance, jump, knee, leg, leisure activity, males, motion, one person, outside, pain, person, problems, protection, rest, risk, safety, scream, shadow, shoe, show, sitting, skill, sport, sprain, teenage, youth,