"It's called So What? and it's a goof on a Disney-style pop song. I said to Maude, 'Write a song - I bet you can do it.' She wrote this hilarious song which goes, 'So what if I like boys? / So what! / So what if I like girls? / So what!'" Director Judd Apatow's 14-year-old daughter Maude wrote a song for her father's new movie This Is 40.