"Our study, one of the largest examining mechanical bull riding injuries in children, reveals that most injuries occur at private events where mechanical bulls are rented from vendors," said Sina ...

In one clip, the star tackles a mechanical bull, holding on for dear life as Allen counts down the seconds she spends atop the machine. "I'm so scared!" she cries, as she throws up an arm.

Professional bull rider Colby Yates judged a mechanical bull riding contest at the new Live! Casino & Hotel in Bossier City. Yates judged nine contestants on their body control during the event.

She also posted photos of the large bump on her head, captioned “never riding a mechanical bull again”. A female bartender later approached to check her teeth were OK but “as soon as she saw ...