Ex-Guns N' Roses bassist Duff McKagan has penned a tell-all autobiography titled ‘It’s So Easy (And Other Lies),’ and the book is due to hit shelves Oct. 4. An 80-page excerpt has been published online and it includes an interesting bit about how Duff Beer on 'The Simpsons' was named after McKagan.

On the surface, the 304-page hardcover book seems like it could filled with the typical rock star clichés, but it actually has have several interesting revelations. One of them is the Duff Beer story:

“When Guns N’ Roses began to break into the public consciousness, I was known as a big drinker," writes McKagan in the book. "In 1988, MTV aired a concert in which Axl introduced me -- as usual -- as Duff “The King of Beers” McKagan. Soon after a production company working on a new animated series called me to ask if they could use the name “Duff” for a brand of beer in the show."

"I laughed and said of course, no problem," McKagan continues. "The whole thing sounded like a low-rent art project or something -- I mean, who made cartoons for adults? Little did I know that the show would become ‘The Simpsons’ and that within a few years I would start to see Duff Beer glasses and gear everywhere we toured.”

Unlike his former GN'R bandmate Slash's recent book, which was co-written by journalist Anthony Bozza, McKagan handles the writing himself. In fact, the bassist already is an established author, having penned articles for Seattle Weekly, ESPN and Playboy.com. Like Slash’s book, ‘Easy’ doesn’t hold back on the gory details, offering a no-holds-barred look into the sex, drugs and rock ‘n’ roll lifestyle of a rocker in one of the biggest rock bands in the world.

Read the 80-page excerpt from 'It's So Easy (And Other Lies)' here.