stepping over age

She thought the old cat was out of his head.
Being a young cat, she just passed it off,
she couldn't get into what he said
He said I'll never again
turn the young kittens' heads
or go running off into the wind
I'm three quarters gone
from the start to the end
Oh I wish I was a kitten again.
(From the Jerry Lee Lewis song, 'I wish I was eighteen again'.)