I coulda' had class. I coulda' been a contender. I could've been somebody, instead of a bum, which is what I am.
But at least I'm still here, which is an accomplishment, I guess. Survival is something.
I think he was "doing" that famous bit from the 1950's classic film "On The Waterfront" starring Marlon Brando...Why would you consider yourself a bum?
Everyone is quality special no matter what their career, social status, physical appearance etc.