Quarantine and chill? More like quarantine and have a little fun. In the midst of global efforts to stay home and socially distance during the coronavirus pandemic, a number of challenges have gone viral thanks to Megan Thee Stallion, Tim McGraw, Snoop Dogg, Jennifer Lopez and more.Billboard has rounded up everything you need to know about the biggest and best challenges that stars have participated in so far.Megan Thee Stallion's 'Savage' ChallengeTo entertain herself while staying home, Megan Thee Stallion launched her viral "Savage" dance challenge March 16, and now, celebs from Justin Bieber and Hailey Bieber to Normani and Janet Jackson are getting in on the fun.The rising rapper has taken to sharing videos of famous pals and fans.