I've been trying to explain the mispronunciation of lyrics in the song ("finish" pronounced "fin-itch") by saying that Popeye is a New Yorker.

"I fights to the finish,
'cuz I eats my spinach.
I'm Popeye the Sailor Man!"
from Wikipedia: In addition to a gravelly voice and a casual attitude towards grammar, Popeye is known for having an apparent speech impediment (a common character-distinguishing device in early cartoons), which either comes naturally or is caused by the ever-present pipe in his mouth. Among other things, he has problems enunciating a trailing "t"; thus, "fist" becomes "fisk" (as sung in his theme song, which makes it conveniently rhyme with "risk") and "infant" becomes "infink." This speech impediment even found its way into some of the titles of the cartoons.