The Kind-Hearted Smart Aleck

Is it just me (no response necessary, thank you) or do jobs that require public speaking of some kind treat all potential customers as idiots? Does it say on the job application, "Can you smile, be perky and spell things out for others whom aren't as mentally stable as you and keep a straight face without laughing?" Two jobs that immediately come to mind are that of being a flight attendant and a sports announcer. Let's go with being a flight attendant first. Showing us where the exits are, as if we can't see the E-X-I-T in bright red colors, is one of the things that they point out. There's always the infamous instructions about how to put on a seat-belt. I always want to raise my hand after they explain and say, "Excuse me, but could you please explain that again? I didn't get that the first time."  Nor did I need it.  I think the first time I got into a car after I was born, I was able to put a seat-belt on. Put that thing in that thing, oh,...