Yes. It was from a scene in the Beverly Hillbillies that for some reason stuck in my head since I was a kid. It had something to do with Mr. Drysdale's college fraternity.
I’ll see if I can find it in some tv trivia sites sound beyond horrible
I used Google and there were a bunch of variations on gin and rootbeer. One was a variation on a Ramos Fiz another was called a Husky Slammer Another used ginger slices as a garnish. Well, I guess I’m going to try one of them if I have any rootbeer.
Here’s a recipe https://cocktailsandshots.com/recipe/root-beer-fizz/