Lyric discussion by davmann 

does anyone know what the "Dog Eat Dog, Rat eat rat"-part means?

"if its a dog eat dog world, then why am I always wearing Milk Bone underwear?"

Norm from Cheers

I think he's saying as Ray Kroc that sometimes the world ins't just dog-eat-dog. The business world is rat-eat-rat. It's worse and he conquered it. Cool!

"<b>It's a dog-eat-dog world</b>" is an old cliché that hard-nosed (or some other body-part) business types often use to rationalize being assholes -- lying, cheating, stealing, etcetc; anything they've chosen to do to attain financial success by doing anything of less-than-Christian ethics. "Rat-eat-rat" takes it to another level. The fact that the subject of the song is the making of a financial empire by selling first America, then the world, on burgers -- burgers ostensibly made of cow-meat, but, hey, you do what you gotta do to get by, right? -- is no doubt purely coincidental, and should in no way be...

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