Jimmy Fallon pranked the judges on "The Voice" with his Michael McDonald impersonation and got 3 chairs to turn!
Or should we say 4? When Blake Shelton didn't hit his button, Jimmy walked off stage and hit it for him.
He was doing his new show ("That's My Jam") and came over to congratulate Blake on his 23rd (and final) season on the show.
So what did Blake really think? Watch the end of the video!