3x21 - 8 Simple Rules... for Dating My Teenage Daughter

After turning down Bridget's request to throw an after-prom party in a hotel room, Cate decides to throw a school- sanctioned party at the house which totally embarrasses her kids. Meanwhile, Kerry tries to make a political statement by inviting a girl to the prom, and Rory is overjoyed when a hot senior asks him to the dance.