The Banger Sisters (2002)

When fiftysomething Suzette loses her job as a bartender she decides to make a road trip to visit her old friend Vinnie who she hasn't seen since their days as groupies back in the day. On the way she meets Harry, a nervous writer who says he is going home to confront his father, then shows her his gun. Once they reach their destination Suzette finds that Vinnie is now Lavinia, a conservative housewife who is reluctant to reexperience the flower power of her youth, and Harry finds confrontation with himself rather than with his father.