Raunchy ‘Bachelorette’ May Be the New ‘Bridesmaids’ (Does the C-Word Count?)

No pooping in the street. But plenty of cocaine, stripping and casual c-words.

In one of the most memorable early scenes of the raucously hilarious “Bachelorette,” which premiered at Sundance on Monday night, Gena (Lizzy Caplan) explains her ranking system for blow jobs to a random guy on a plane.

She explains why she routinely gives her boyfriends oral sex ranked at 4 or 5, and what is required for him to get an 8 treatment.

Then she tosses off that she might give some stranger on a plane a 10-grade just for fun.

The guy squirms. The audience squirms. And it’s pretty damn funny.

The take-no-prisoners comedy about a group of best girlfriends heading into the anxieties of a wedding is reminiscent in more than one way of “Bridesmaids,” the runaway, R-rated hit of last year.

The movie was written and directed by a woman, Leslye Headland, and as that previous scene demonstrates, is bereft of any self-consciousness around Being Funny.

(No pooping in the street. But plenty of cocaine, stripping and casual c-words.)

The cast is first-rate, including Kirsten Dunst as the ice queen bee; Rebel Wilson as the fatty who is about to be the first to be married of the group; Isla Fisher as the ditzy sex-pot; and Caplan who just about steals the movie as an angry, coke-snorting wild thing.

The conceit of the movie is that the overweight Wilson used to be called Pig Face and seemed least destined to marry, while her slender and beautiful friends just barely keep their heads above desperation as adults.

But that’s really just an excuse for the girls to run rampant and misbehave in ways that good girls never do. Raunchy and R-rated as it is, the movie feels like it could become an anthem for women of a certain age.

At the q&a after the film, Headland said she was going for a John Hughes, anthem-style movie for her time.

“I was mad our generation didn’t have an iconic movie, so I decided to make one,” she said at the Eccles Theater, wearing a studded black dress that could have walked out of the 1980s. “I wanted to make a movie for us, about people like us. Isla is really just a drunk Molly Ringwald.

A questioner asked Wilson if the fat humor bothered her. “I’m drunk right now,” Wilson responded, to general laughter. “They didn’t want to call me Pig Face. But I was all for it. I think it creates a good dynamic.”

This movie seems likely to sell, and fast. And then Gloria Steinem may have some thinking to do.