What about songs that have to be sung by men AND women together?

One I can think of is John Prine's "In Spite Of Ourselves", a duet by him and Iris Dement. It's a little romantic-comic-drama song, a film theme tune. It's one of those country duets: he sings, she sings.

One of her memorable verses is:
"He ain't got laid in a month of Sundays / Caught him once, sniffing my undies...."

Any other duets like this anyone knows of?

Noman