Tonight Show host gets graphic during round of Pictionary with J.K. Simmons and Lena Dunham

Jimmy Fallon is a man of many talents – drawing footlong hot dogs is not one of them.

When the The Tonight Show host, 40, teamed up with Golden Globe nominee J.K. Simmons for a game of Pictionary on Thursday, he left his guest befuddled.

Beholding Fallon’s first attempt, all Simmons, 60, could say was, “Wow.”

No, it was not an obelisk or a flying saucer, and Fallon’s second attempt only made things worse. Simmons ventured, “Something phallic! A vagina!”

As the clock ticked down – and with another ripped sheet of paper cast aside – Fallon tried to draw an old-fashioned wiener, and Simmons channeled his tough-talking teacher from Whiplash: “Not getting better!”

Simmons did eventually guess correctly … right after the buzzer.

Who did win? Simmons’ fellow guest Lena Dunham, 28, who closed out the competition with this zinger: “Jimmy, I’m saying this with complete love – you could not have failed harder.”