With Moms Mabley, Tiffany Haddish and Mo’Nique as my witnesses, I swear Hollywood could’ve gotten a funnier movie out of Keke Palmer by just setting up a camera in front of her whilst she texts, tweets and blurts whatever comes into her head aloud that the dead-comedy-walking “One of Them Days” provides.

It’s a lumbering stiff “buddy picture” with a “Friday” set-up. Just Keke (“Nope,””Pimp”) and Oscar-nominated singer/songwriter (for Original Song “All the Stars” from “Black Panther”) turned overripe actress SZA playing 30ish roomies trying to cope with being broke, Black and trapped “in the cycle” of working poverty “in the hood” in L.A.

As Dreux and Alyssa, they make mistakes about men, debt, which mobsters you don’t cross and white girl privilege over the course of a single day when the rent is due.

Waitress with “business school” cred Dreux (Palmer) has a big interview and a chance to go corporate with her chain restaurant employer. But her artist and “painter…of houses, portaits…and makeup” roomie of seven years Alyssa (SZA) lets her libido get the best of her as she passes on the rent money for well-endowed lover Keshawn (Joshua David Neal) to give to the no-nonsense/no AC/”stanky water” Baldwin Village complex landlord Uche (Rizi Timane), who is African and is taking no more excuses.

“He’s an ENTREPRENEUR” is no excuse when Mr. Good-in-Bed Keshawn skips off with their money, thanks to Alyssa’s gullibility.

The clock is ticking on their last day with a (leaky) roof over their heads, and they have to cope to bad hair and little time for the complex’s gay hairdresser to save the day, a “Payday Whenever” loan scam, a crazy homeless sage (Katt Williams) who warns them away from this “lifetime” debt, Keshawn’s brawny new lover Berniece (Aziza Scott) serving up ass-whuppings, and a gang leader named Lolo (Amin Joseph) who’s lost a very pricey pair of Air Jordans, which the girls might have just sold to Lil Rel Howery.

There are funny (ish) bits here — selling their blood plasma and facing a first-time plebotomist, forced to greet the world in donation-box clothing, the “white girl” (Maude Apatow) integrating their complex and shoving the double standards on fit-for-habitation housing, police and fire response down the Black folks’s throats and that “if you have a job, an arm and a leg the system will approve you” payday lender (Keyla Monterroso Mejia) who laughs at their credit scores and barks at the two roommates for being “Too OLD to not know how credit works.”

But mostly, this is a slow-moving parade of “WTF is MY CAR?” and “Girl, I TOLD you not to park there” gags between the mismatched roomies. I’m a longtime Palmer fan, and she’s almost never been this dull. She and SZA needed an edgier script to sparkle.

This picture, whose previews, promos and TV ads promised pace, patter and potential, adds up to the first major disappointment of the new cinema year.

Rating: R, violence, profanity, sexual situations

Cast: Keke Palmer, SZA, Amin Joseph, Katt Williams, Maude Apatow, Aziza Scott and Joshua David Neal

Credits: Directed by Lawrence Lamont, scripted by Syreeta Singleton. A Columbia Pictures release.

Running time: 1:37