Bad Moms Mila Kunis, Kristen Bell, Kathryn Hahn. Directed by Jon Lucas and Scott Moore. Rated R. Opens Friday citywide.

You might expect a movie with the title Bad Moms to feature some naughty behavior, but the comedy from writer-directors Jon Lucas and Scott Moore (21 & Over) is disappointingly tame. It’s also really just about one mom, Amy Mitchell (Mila Kunis), who finds herself questioning her priorities after she catches her husband cheating on her. Amy has been a super-mom to her two kids, but what she really needs is to take a few girls’ nights out with her new friends Kiki (Kristen Bell) and Carla (Kathryn Hahn) and hook up with the hot single dad (Jay Hernandez) who’s been making eyes at her.

Lucas and Moore also wrote the first Hangover movie, but Bad Moms doesn’t offer anything near that level of debauchery (at most, it’s Slightly Imperfect Moms). The plot is aimless and disjointed, only coming into focus halfway through as Amy decides to take down the rich-bitch president (Christina Applegate) of her school’s PTA. Lucas and Moore portray Amy as some sort of bold truth-teller about how tough it is to be a mom, but the humor is mild and clichéd (one bit is almost entirely recycled from The Boss, which also features Bell), and a little disingenuous coming from two dudes. The closing credits feature interviews with the main stars and their actual moms, which are a funnier, more relaxed portrayal of real motherhood than anything in the movie.