Jimmy Fallon is known for playing games with his famous guests on "The Tonight Show," but Dakota Johnson introduced the host to an all new game Wednesday night called The Acting Game. The "Fifty Shades of Grey" star told Fallon that it was a game that she invented with her family, but that they had only played once.

"You get a fake scenario and answer the phone and act out the scenario," Johnson explained.

Fallon was eager to start the game and unveiled a stack of cards with fake situations on them. Johnson's first scenario that she had to act out was her fiancé, Darth Vader, was calling to say he wanted to break up with her.

"Hi babe," Johnson said upon answering the fake call. "Did you just wake up? Where are you? Who the f-k," Johnson said before she covered her mouth at her curse word.

"Hang up the phone, hang up the phone," Fallon instructed her as he laughed at her mistake. "It's an adult game."

Check out Johnson and Fallon play the game below: