I thought this was interesting. Sorry, it's a slideshow but you only have to click through 16 of them. And I had no idea "Tusk" is slang for penis.
https://www.msn.com/en-us/music/gallery/inside-fleetwood-mac-stories-behind-the-songs/ss-BBEpuAk
https://www.msn.com/en-us/music/gallery/inside-fleetwood-mac-stories-behind-the-songs/ss-BBEpuAk