Brian Wallows and Peter’s Swallows is episode 17 of family guy season 03. It was originally aired on January 17, 2002.
When Brian finds the dating scene unbearable, he drowns his loneliness in alcohol and gets arrested for drunk driving. A court judge sentences him to care for a cranky elderly woman who winds up being the love of Brian’s life. Meanwhile, Peter grows a beard which becomes a nest for endangered birds