Here's a naughty one: Vernon Duke's "Taking a Chance on Love"

"Here I go again, I hear those strumpets blow again"
"Here I go again, I hear those trumpets blow again."

Then there's "Send in the Clones". (Isn't it rich?)

Another naughty one from "I'm Gonna' Sit Right Down and Write Myself a Letter" (early Fats Waller tune.

"Kisses on the bottom, you'll be glad you got 'em"
"Kisses at the bottom, you'll be glad you got 'em"