Charlize Theron‘s laughter got the best of her!

“I went to go seeBorat,” she explained, before adding, “I had a pre-existing injury in my neck — a herniated disk in my neck.”

“A few of us went to go… and halfway through that movie, I laughed so hard that my neck locked up,” Theron continued. “And, like, an ambulance had to take me to the hospital, and I was in the hospital for five days.”

Though the movie, which follows Borat (Sacha Baron Cohen) across the country on a mission to meetPamela Anderson, came out nearly 15 years ago, Theron said she’s never had a chance to pick up where she left off.

“I didn’t finish the movie! I’ve never, like, fully finished the movie,” she admitted, to which Meyers, 45, joked back, “It’s a risk now!”

Kevork Djansezian/Getty; 20th Century Fox

CHarlize Theron and Borat

While on the late-night talk show, the actress also shared how she oncereceived a hilarious birthday gift, from none other thanRihanna.

“A couple of months ago I got something in the mail, it was a T-shirt,” Theron told Meyers, adding she and the 31-year-old singer had the same publicist, Amanda Silverman.

“Rihannahad made a T-shirt of the birthday greeting that my publicist gave her which literally was like, ‘To my most favorite client ever,’ ” Theron explained. “And Rihanna wrote in the following email, ‘I’m making a T-shirt of this and sending it to Charlize.’ “

The “Work” singer kept her promise and sent Theron a T-shirt with images of the email exchanges on the front.

“This is a real thing that Rihanna had made to burn you,” Meyers said while laughing and holding up the T-shirt.

Theron jokingly said, “It made me feel great!”

Long Shotis in theaters Friday.

source: people.com