From a reddit thread on lemonodor comments that miss the point:

A couple of years back, I was reading Lisp In Small Pieces at my in-laws'. A relative of a relative got very interested and started asking me questions about it. I was surprised since I didn't even know that he programmed. After a minute or two, my wife realized the truth of the situation and broke in to mention that the Lisp I was reading about was a programming language. You see, the fellow I was talking to is a speech therapist. He was just as surprised that I was reading about lisps as I was that he cared.

Part of what was funny about it was how many words we shared but which had subtly different meanings. "interpreter", "syntax", "semantics", "symbols", etc. I was able to confuse him pretty badly without even trying.