Jimmy and Ariana Grande take turns drawing questions from the best friends box and guessing each other's answers.

Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN

Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c
Get more Jimmy Fallon:
Follow Jimmy: http://Twitter.com/JimmyFallon
Like Jimmy: https://Facebook.com/JimmyFallon

Get more The Tonight Show Starring Jimmy Fallon:
Follow The Tonight Show: http://Twitter.com/FallonTonight
Like The Tonight Show: https://Facebook.com/FallonTonight
The Tonight Show Tumblr: http://fallontonight.tumblr.com/

Get more NBC:
NBC YouTube: http://bit.ly/1dM1qBH
Like NBC: http://Facebook.com/NBC
Follow NBC: http://Twitter.com/NBC
NBC Tumblr: http://nbctv.tumblr.com/

The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show including: comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives.

Best Friends Challenge with Ariana Grande
http://www.youtube.com/fallontonight
#ArianaGrande #FallonTonight #BestFriendsChallenge