THE MOST TRENDTASTIC YOUTUBE VIDEOS OF THE DAY: Willow Smith Got Pranked, Jedi Tennis & More

Justin Bieber pranked Willow Smith so good that she has vowed to get revenge! Justin Bieber's manager Scooter Braun and "swag coach" Ryan Good put hair color in their hair and whipped it.

Justin even joined the prank and ran on stage with a cow-bell. The video is pretty funny and worth checking it out.

In more YouTube videos of the day, check out the dog who forgot to jump, a dancing ninja, Jedi Tennis and more.