What movie uses the "Mr. Dumas" joke?
I am familiar with this commercial for A&W Root Beer:
But I swear a similar joke is used in a movie. I thought that it was Wayne's World but I can't seem to confirm it.
In the movie I remember, the joke is done with what I thought was Garth talking to someone who had a name plate that had the last name "Dumas" - at first Mr. Dumas would correct people to say "Do-moss" but later, people would say his name correctly and he'd frustratedly yell "it's pronounced dumb-@$$"!
Anybody? It's driving me nuts, and googling hasn't helped. It WASN'T the joke used in Shawshank, either.