May 06, 2016 at 11:50 AM EDT

Robert Downey Jr. is consistently at the top of Forbes‘ list of highest-paid actors, and his ability to make good drama out of things that seem silly on paper, such as the superhero registration debate of Captain America: Civil War, is one of the things fueling the Marvel Cinematic Universe. So when he stopped by The Tonight Show on Thursday, host Jimmy Fallon got Downey to give him some lessons in the art of dramatic acting. Downey’s first prompt for Fallon was certainly strange.

“There’s a knock at the door, you open it. There’s a beautiful girl there who you’ve been in love with. You thought she was dead,” Downey said. “Let’s pretend her name is Harmony. Then you realize you’re gonna have to kill her.”

The camera zoomed in on Fallon’s face as he responded, “Harmony…?” in a frightened voice, playing a mix of emotions on his face. Downey called it a success. The next prompt came from things Downey found hard in acting — in this case, driving.

“You’re behind the wheel. You just got away. Zombie apocalypse,” Downey said. “But that car that you ran off the road, they’re back! Wait a minute — you’re feeling gassy.”

Watch the clip below.

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