Lyrics Main Theme - Pumping Iron

pumping up pumping iron
pumping up, it really feels like flying
coming up just like a lion
pumping up, pumping iron, work it up now, pump it up nowwwww
everybody wants to be remembered
everybody wants to have a friend

"I dont understand this part"

........pumping iron, nobody's gonna be bigger than I am
everybody wants to be in heaven
everybody wants eternity
don't believe the things you heard
don't believe in no fancy words
all the wings is on the bird

Can someone help me to find the "no-understand part" ?