The Tonight Show Starring Jimmy Fallon - Season 4Dakota Johnson deserves credit for keeping a straight face through "Fifty Shades of Grey" and -- out February 10 -- "Fifty Shades Darker." But she couldn't hold it together through her hilarious Mad Lib Theater segment on "The Tonight Show." For once, Jimmy Fallon was not the one cracking up through a scene ... or at least not as much as the actual star. To be fair, though, it's hard to stay deadpan with lines like this:

"When I'm around you I feel like a Zamboni driver at a funeral. You know?"
"I've heard that before."

Mad Libs Theater is a regular segment on Fallon's "Tonight Show," forcing guests to give him adjectives, nouns, body parts, etc., and then folding them into a scenario they play out live in front of the studio audience.

Watch how the "Fifty Shades Darker" Mad Libs scene played out:Everybody do the Hairless Sausage dance!

Dakota Johnson (Anastasia Steele) and Jamie Dornan (Christian Grey) seem to be having a good time promoting the second movie in the "Fifty Shades" franchise. Yesterday, Jamie Dornan spoofed "Fifty Shades Darker" on "Ellen," and then he talked to Jimmy Kimmel about his newly shaved head.

"Fifty Shades Darker" is out next Friday, Feb. 10, and the third film, "Fifty Shades Freed," is currently scheduled for February 2018.

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Fifty Shades of Grey Movie Poster
Fifty Shades of Grey
Based on 46 critics

When college senior Anastasia Steele (Dakota Johnson) steps in for her sick roommate to interview prominent... Read More

Fifty Shades Darker Movie Poster
Fifty Shades Darker
Based on 39 critics

When a wounded Christian Grey (Jamie Dornan) tries to entice a cautious Anastasia Steele (Dakota Johnson)... Read More

April 30, 2017
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Fifty Shades Freed Movie Poster
Fifty Shades Freed
In Theaters on February 9, 2018

The next installment in the franchise. Read More

The Tonight Show Starring Jimmy Fallon TV Show Poster
The Tonight Show Starring Jimmy Fallon
NBCTV14February 17, 2014
Based on 19 critics

Jimmy Fallon interviews celebrities and hosts musical performances. Read More