Demi Lovato [1] stopped by The Tonight Show Starring Jimmy Fallon on Friday night to promote her upcoming Future Now tour with Nick Jonas [2]. During her appearance, Demi got candid about her first public performance [3], admitting she got laughed at by her fifth-grade crush, and then played an epic round of Wheel of Musical Impressions. Not only did she nail her Cher and Fetty Wap impressions, but she also proved that she could sound just like Christina Aguilera [4] when she belted out the "SpongeBob SquarePants Theme Song." Prepare to be blown away and watch the clip above now, and then check out the best celebrity impressions of all time [5].