Even fans of the Mary Katherine Gallagher skits on Saturday Night Live will find this movie overlong at 82 minutes. It is one thing for a 30-something woman to play the part of a high school girl in a skit, but another to watch her try to act the part of a high school girl in a movie, even one as plotless as this one.

Mary Katherine (Molly Shannon) has one dream — she wants to be passionately kissed. While she waits, she practices on whatever is available, including a tree and a stop sign. Ultimately, she becomes a little more specific in her dream. She wants to be kissed by high school dream date Sky (Will Farrell, also from Saturday Night Live). And she decides that since he is going steady with pretty cheerleader Evian (Elaine Hendrix, repeating her meanie role from “The Parent Trap”) the only way to get his attention is to become a superstar. And she thinks she can do that by winning the Catholic Teen Magazine VD Awareness Talent Contest. Other attempts at humor include a boy with obsessive-compulsive disorder, a television falling on a dog, an Irish step-dancing tragedy, and repeated falling down and showing of the world’s whitest cotton underpants.

Younger teens will get a kick out of the naughty words and slapstick humor and may even relate to Mary Katherine’s struggle to become someone who is admired while staying true to herself. Any older folks who wander in by mistake may enjoy some references to old movies, especially Made-for-TV classics like “The Boy in the Plastic Bubble.” And families might take this opportunity to talk about the careless cruelty and need to conform of many high school students, and Mary Katherine’s growing understanding that “you have to be your own rainbow” and that what matters is what she thinks about herself, not what Sky thinks about her. But parents should know that there are a number of raunchy references and a portrayal of Mary Katherine’s vision of Jesus that may be offensive to some viewers.