The new Trailer Park Boys movie, subtitled Don’t Legalize It, begins, as these things tend to do, in the local dump.

The residents of the Sunnyvale trailer park that gives the blue-collar parody its name and its presiding ethos — maximum inebriation — are arriving for a funeral.

The father of Ricky (Robb Wells), the local dope dealer, has died (something about trying to steal propane) and the mourners are out in force.

“Couldn’t wear a f---n’ shirt to a funeral, Randy?” Ricky shouts at the topless, pot-bellied assistant to the park’s manager (Randy is always bare-chested, despite his prodigious stomach. He’s also a former male prostitute.)

Then the service starts, but Ricky is too emotional to read his eulogy, which he has written on the back of a cigarette box. His friend Bubbles (Mike Smith) reads it for him: “My dad was awesome and if you don’t like him, you can f--- off.”

And just like that we’re back in the world of tawdry criminality — dope dealing, drunk driving, petty theft, felonious stupidity — of a comic universe that is quickly playing out its invention.

The Trailer Park Boys have ridden a national affection for fumbling but sincere losers to seven seasons of a TV series (it is moving to Netflix for season eight) and three feature films, with increasingly modest artistic returns.

Trailer Park Boys: Don’t Legalize It is based on the news that the Canadian government is about to legalize marijuana, which would put Ricky out of business.

He’s going to Ottawa to protest, a road trip that will soon involve Bubbles — currently living comfortably under a friend’s porch — who has learned that he is about to inherit some property in Ontario, and Julian (John Paul Tremblay), the third lifelong criminal in the group.

Julian has become what he calls “a businessman,” in that he steals urine from the local military base and resells it to drug addicts who have to take tests to prove they are sober. He has gallons of the stuff.

So far, so grungy: The Trailer Park Boys are a monument to a certain kind of uninformed, stumbling idiocy (at one stage, Ricky asks for “11 years radioactive lost wages”) of a life on the fringes, out where pee is a marketable natural resource.

They’re appealing in the manner of reality television shows that use vulgarity as their currency — the point of most of them seems to be that they’re pointless — and the show is made in mockumentary style to underline that feeling of woozy life as it is lived.

There are a few laughs in watching the boys stumble into increasingly ridiculous jackpots — at one stage, Ricky’s car has transmission problems and he can drive only in reverse — that exaggerate a culture of the lazy, the makeshift and the drunk.

Everyone is stoned in these parts. Even the putative voice of society, park manager Mr. Lahey (John Dunsworth), who plans to plant cocaine on Ricky so he’ll be thrown in jail, ends up snorting most of the drug himself.

It’s tolerable because director Mike Clattenburg, who created the series, overlays the stumblebum ineptitude with a layer of affection.

Ricky, Julian and Bubbles love one another and the Trailer Park Boys brand is really a romance among people who have found a kind of home, crass, lewd and common, but a home The pot just makes it tolerable. The pee is a bonus.

Trailer Park Boys: Don’t Legalize It

Rating: 2½ stars out of 5

Starring: John Paul Tremblay, Robb Wells, Mike Smith

Directed by: Mike Clattenburg

Running time: 95 minutes