he actually said it the other way, the word became a common name for person like we have dude and bro and mate and buddy and bloke and chelovek and chovek and hombre and man
Discussion
also, there are other names that became generic pronouns too, like John, which applies to ex boyfriends and clients of prostitutes both, and jack, not sure if that one only happened after the song, and mac, that is a common one from new york i think, and then there is appellatives like Junior and Senior and Son and Grandpa haha