There is a sign in the drugstore window: "Condoms, custom fit."
So a man walks up to the counter and asks for a condom, like the sign says. The man at the counter tells him to see Edith in aisle 4. So the man finds Edith. Edith grabs the man by the crotch, then gets on the PA system and says, "Medium condom. Medium condom."
Well the man is embarrassed, but goes to the counter to get his condom.
Later, a second man sees the sign in the window, and goes up to the counter to get his condom. The druggist tells him to see Edith in aisle 4. Same thing happens, Edith grabs his crotch, gets on the PA and says, "Large condom, this man needs a large condom."
The man is pleased, at least, to be a large.
Next a teenager goes into the drugstore to get a fitted condom, and is told to see Edith is aisle 4. Edith grabs his crotch, gets on the PA and says, "Clean-up in aisle 4, clean-up in aisle 4."