What happens when Lil Jon runs into Lena Dunham and celebrity trainer Tracy Anderson in a voting booth? Lena politely explains, "This is how we do it in Hollywood. We vote with our trainers." The stars have teamed up with Rock the Vote for a new "Turn Out For What" video promoting the turnout of young voters, and the video also features appearances from Darren Criss, Sophia Bush, Natasha Lyonne, Fred Armisen, and more. Watch the full video above to see a whole lot of dance moves and to hear each celebrity explain which issues they'll be turning out to vote for in upcoming elections.