I couldn't find the ammonia at the grocery, so I proceeded to checkout. The clerk was a perfectly nice cheerful young man 19-22 years old.
CLERK: Did you find everything today?
ME: Everything but the ammonia. Do you know where that is?
CLERK: Amo...huh...what did you say?
ME: Ammonia.
CLERK: What is that?
ME: It's a chemical cleaner - comes in a plastic bottle.
CLERK: Chemical? Oh no, we wouldn't have anything like that here.
Later