Chris Rock Hosts “Saturday Night Live ”— as Longtime Friend Adam Sandler Makes a Surprise Cameo: Watch

Gracie Abrams made her musical guest debut during the Dec. 14 episode

Chris Rock brought the laughs to Saturday Night Live — with a little help from Adam Sandler.

The actor and comedian, 59, hosted the late-night comedy sketch series for the fourth time on Dec. 14, when he was joined by Gracie Abrams as musical guest.

In one sketch, Rock played a doctor performing surgery on a patient, who accidentally has their gallbladder removed instead of their appendix thanks to a mistake made by another surgeon.

At one point, the previously covered patient sits up, revealing themselves to be Sandler, 58. As he speaks with the medical staff about the mix up, blood begins shooting out of his body, covering the doctors from head to toe.

Rock and his longtime friend Sandler starred on SNL together in the 1990s. In the years since, they have costarred in multiple movies together, including 2005’s The Longest Yard, 2010’s Grown-Ups 2013's Grown-Ups 2 and 2018’s The Week Of.

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Related: Inside Chris Rock's Life Now, as He Prepares to Host SNL: 'He's Doing Great' (Exclusive Source)

Elsewhere during the show, Rock took part in various sketches, including one in which he goes on a blind date and another where he portrays an elf at a shopping mall amid the holiday season.

One other saw him and various SNL stars portray workers attending their annual work Christmas party.

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During her SNL musical guest debut, Abrams, 25, first performed "That's So True" from her The Secret of Us album.

Later in the show, she returned to the stage to sing "I Love You, I'm Sorry."

Related: SNL's Best Sketch of All Time? The Saturday Night Movie Cast Picks Their Favorites (Exclusive)

SNL announced the cast for its milestone 50th season earlier this year.

Ashley Padilla, Emil Wakim and Jane Wickline have been added to the sketch comedy show's roster, while Punkie Johnson, Chloe Troast and Molly Kearney have all stepped away. Returning cast members Marcello Hernandez, Michael Longfellow and Devon Walker, meanwhile, were promoted to the main cast after two years each as featured players.

Michael Che, Colin Jost, James Austin Johnson, Bowen Yang, Mikey Day, Andrew Dismukes, Chloe Fineman, Heidi Gardner, Ego Nwodim, Sarah Sherman and Kenan Thompson round out the remainder of the cast.

Next up to host SNL is Martin Short with musical guest Hozier on Dec. 21.

Saturday Night Live airs weekends on NBC.