Probably looking at late 1980s when USA aired ‘Night Flight.’ They showed a number of oddball programs/videos as I recall, and in one of them there’s a Black female singing to a dour, sad sack looking chap (looking somewhat similar to Godfrey Cambridge) sitting down (possibly on some kind of bench made to resemble a wall), and the only line I can remember is something like “You are my Humpty Dumpty love” (although in my head I keep hearing her saying “Humpy Dumpy Love”).
Not 100% sure it was from Night Flight 30 years later, but that’s been my memory of it.