Oh. My. God. Yeah, I dunno if he originated it, but that was his schtick—still is, as far as I know, I’m pretty sure he’s still alive. I remember seeing him on every goddam variety show in the 1960s.
Someone would call him Johnson and he—always decked out like a 1940s gangster—would spiel, “YOU can call me Ray, or YOU can call me Jay, or YOU can call me Ray-Jay, or YOU can call me Jay-Jay . . .” etc., etc., ending with, “But ya doesn’t hafta call me Johnson!”
It did indeed get old pretty fast.