Even though it's not exactly in the folk category, I'll offer a favorite misinterpretation:

I remember wincing the first several times I heard Juice Newton's "Angel of the Morning", wondering if she was really singing:

"Just call me Angel of the Morning, baby, Just brush my teeth before you leave..."!

(Others insist she'd said "Just touch my cheek..." You listen and decide.)

This served to reinforce the wisdom of an old friend who said: "Don't believe a word you hear and only half of what you see."