Not sure of the name of a movie. It's about a group of girlfriends that go to see one of their friends. They find out that their friend is in an abusive relationship. I do remember one scene that might help a little more. On their way to see their girlfriend they tease a cop or maybe some random by pretending they are taking off their undies, but really they have a glove box full of undies and they throw their spare undies to the guy.
Bunny054
28th Feb 2013