Tommy Chong can’t get over Cheech Marin shaving off mustache (exclusive)

Tommy Chong is not afraid to split hairs over the updated appearance of his longtime comedy partner, Cheech Marin.

In an exclusive clip (above) from their upcoming buddy comedy-documentary, Cheech & Chong’s Last Movie, Chong just can’t get over the vision of a clean-shaven Cheech, who famously sported a thick ‘stache in their prior work together.

“You still won’t grow your mustache back,” he laments to Marin. “You made such an imprint with that character, and then to have you not doing that, you know, it’s really hard to accept it,” he admits as the reunited stoner legends embark on a classic road trip comedy to reminisce about the highs (really high, man) and lows of their decades-long careers.

“Your mustache is so important for the Cheech character,” he continues. “That’s your trademark, and you refuse to do it,” he chides his Up in Smoke costar.

From his familiar spot behind the steering wheel, Marin calmly explains, “I didn’t want to wear a mustache because I was doing other roles, and also it made me look older, and I didn’t want to look older.”

But Chong just isn’t ready to puff puff pass on the idea of a mustachioed costar, insisting, “You’re not Cheech.”

“Of Cheech & Chong,” the Nash Bridges star clarifies, “I’m Cheech of Cheech Marin.”

“Yeah, well, that’s the difference,” Chong stubbornly concedes while his longtime bud consoles him: “Nothing lasts forever, Tommy. You know, nothing lasts forever.”

The peers first combined their grassroots comedy in the Grammy-nominated debut album Cheech and Chong — featuring their famous “Dave’s not here” routine — in 1971, and went on to make several more hit albums before establishing the stoner comedy genre as we know it with 1978’s Up in Smoke, and followups like Cheech and Chong’s Next Movie, Nice Dreams, and Still Smokin.

The pair won a Grammy for their parody song “Born in East L.A.” (a take on Bruce Springsteen’s “Born in the U.S.A.”) in 1986, but when Marin directed and starred in a film of the same name the following year, Chong was not involved. Their most recent endeavor together was co-writing and voicing Cheech & Chong’s Animated Movie in 2013. Until now.

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Their new documentary, directed by David Bushell and co-produced by Chong’s daughter, Robbi Chong, explores how the stars first lit up each other’s careers (with the help of producer Lou Adler, who also appears), and the years of turmoil and eventual reconciliation that followed.

Check out the exclusive clip and poster above, and watch the full trailer below. Cheech & Chong’s Last Movie blazes into theaters nationwide on April 25 after sparking up a limited release on April 20 (heh heh heh).