Chafing Dish joke?

My wife and I were trying to recall the movie or TV show in which there was a running joke about what the heck exactly a chafing dish was. Does anyone recall this? It was either a comedy-type movie or an episode of a TV show.
I know it’s not much to go on, but any help is appreciated.

It was at the end of the movie “Hot Shots!”

THANK YOU! Now that you say it, it’s like I knew it the whole time! :smack:
I know if I hadn’t found out, I’d have been thinking about this all night.