Help with movie quote/scene please.

On another message board that i hang out on (yes, i know, it’s heresy!) someone asked the following question and has met with little luck so far, so i thought i’d bring the problem to the culture-vultures here at SDMB:

If you feel like answering him/her directly, you can go here. Otherwise, just post the answer on this thread an i’ll give you credit when i post on the other board.

Man, this sounds really familiar. I’m going to kick myself…

But this exchange does occur in the “Our Gang” short Helping Grandma.

Stymie does not exactly fit the bill as a “fat small-town sheriff,” although he was (shaven) bald for the role, and–despite having lived all his life in CA–did have something of a “southern” accent. And Wheezer was minding the store, so he hardly looked like a “dim-witted deputy.”

The premise: Stymie had been sent to the store to get some of “it.” He didn’t know what “it” was, but he’d recognize it if he tasted it.)