It’s the little, almost imperceptible twists to the story that make Blockers a worthy entry into the teen sex comedy canon, most notably that girls and women are funny and can play more than the killjoy or the babe.

Blockers doesn’t pull off the impossible so much as it turns the tables on a common formula, finding something fresh, empowering, and hilarious in that time-old story of a group of friends making a pact to lose their V-card on prom night.

It plays to the strengths of its performers, from screen novices to the comic vet of the cast, Leslie Mann, who may never have had this good a showcase.

Blockers isn’t really about these girls losing their virginity. It’s about how they seize control of their destinies, one triumphantly lewd zinger at a time.

While Blockers treads some familiar territory in its sex pact escapades, and occasionally buckles under the weight of its escalating insanity, its fresh perspective and stellar casting ensure a coming-of-age comedy that adds something vital to the genre.