Fallon and Simmons were not so in sync. When the late-night host attempted to draw a "foot-long hot dog," the Whiplash star declared, "Something phallic. A vagina," he quipped, adding, "It's a medical term."
Needless to say the Dunham-Higgins team took home the win, and, only slightly gloating, the former Golden Globe winner told Fallon, "Jimmy, I'm saying this with complete love. You could not have failed harder."
The season 4 premiere of Girls airs Sunday on HBO, and ET caught up with Dunham who revealed why this season made her believe she has psychic powers. Check out our chat, below.