Some underworld spy or the wife of a postman

The story:

My friend and I used to play with Barbies with Carly Simon blaring on the sterio, so we were able to sing the lyrics with confidence. One time, I was with my dad when the song came on the radio. He still laughs at me to this day. Somehow, now that I think about it, the wife of a postman would never be a really great feat for such a vain guy...