“Any Friend of Diane’s” is the tenth and final track on Weezer’s eleventh studio album Pacific Daydream. It, like the majority of the rest of the album, was produced by Butch Walker. It is similar to “Mykel and Carli”, “Susanne” and “Jamie” in that it was inspired by women who were helpful in Weezer’s early career. But unlike those earlier songs, it doesn’t refer to a specific person of that name; “Diane” represents a number of women. According to Rivers Cuomo in 2017:

I started thinking about the women in our early career that helped us or supported us in one way or another before we got a record deal. I was thinking about the woman who was my boss at Domino’s Pizza, she painted my band’s logo on the back of my jean jacket and that meant the world to me. Or my girlfriend in the early days of Weezer buying me food, cooking me meals and giving me a place to stay. There’s so many people like that; you’re not signed to them contractually, they don’t have a piece of your business as an investment but I don’t know if I would have ever got off the ground without them. It’s a very emotional relationship which is kind of doomed to end from the start.