Nope, this isn't a tribute to the female of the species' personality or sense of humour; Davidson's book, One Track Mind, comprises images of things that resemble breasts.
But this book isn't just an opportunity to titillate (sorry), as the proceeds of the breast-a-like compendium are going to charity.
Davidson explains: "I've always collected stuff for no reason. I didn't set out to write a book, then my mother was diagnosed with breast cancer and my father passed away following a battle with prostate cancer. It got me thinking about the pictures I'd been taking - could I put them to good use?"