Rat Faced Man

Many years ago I was on the bus coming home from bus from Sandringham station.
Sitting in front of me was a middle aged man with a long pointy nose, big flappy ear and a huge pair of buck teeth.
He was listening to a walkman and singing "Jump", by The Pointer Sisters (or was it Diana Ross?).
Anyway.
He was singing it in that kind of mumbo jumbo way you sing when you don't know the words.
He did know the words "jump" though, so his singing would go: "Mmmfm lunfnn mmeme JUMPING!!!!" etc.
This drawing doens't really look much like him but as I drew it I was reminded of him.