Thank you very much, Hydromet.
There were a lot of great entries on that one. My personal favorite was ORAC's, because it reminded of the time my wife tried opening the console on a rental car with the parking brake button. (It released as soon as I tapped the brake; I never would have figured it out if she hadn't 'fessed up.)
Along the same lines (or not . . .), I'll give this photo a shot:
