This isn't really a comment but there was one elder in my congregation who I noticed always used the same examples and metaphores when giving talks.
My "favourite" one was when he was talking about people making the minimal ammount of effort re field service and would always use the example of a "minimalist painter" who "just splashes paint here and there over the canvas" which was an obvious reference to the work of Jackson Pollock the famous abstract expressionist who made action paintings that are so full of movement and colour that they are about as far as you can get from minimalism.
Another that stays in my mind even 20 years later is that he would regularly quot Nietzsche's famous phrase "God is dead" but as well as no doubt having no idea of it's origin also appeared to believe that the phrase was to be taken literally. Idiot.
Both these really annoyed me whenever he used them and I do wish I'd stood up and informed him how ignorant he was but never plucked up the courage to do so.