The Bass Guitar
Duff fell in love with a bass guitar just like his father, but killed it, so he could play her in the band Guns N' Roses. That is how the song I Used To Love Her came to be. Afterwards, Duff fell in love and had sex with many more Bass Guitars.
In Guns N' Roses
While in Guns N' Roses, Duff found another love,doing Axl Rose, Heroin, and Alcohol, which made his Bass Guitars jealous, and when confronted by them, he said, "Hey, at least it isn't Crack!" These affairs went on for sometime. Since his Bass Guitars left him, he decided to take up Rhythm Guitar in Loaded
Too bad theres no Slash biography
But theres Buckethead biography