Can pilots do tricks in a fish bowl ?
When visiting a zoo or aquarium, people invariably end up tapping on the glass to see if the animals will react and maybe move in response or do tricks to amuse the visitors.
When boarding a flight as a passenger via steps (not a bridge), one usually has access to the windows near where captain sits. Has anybody (adults, not children) tried tapping on the window to see if pilot(s) will react and maybe do tricks ? Perhaps a bit like getting a seal/sea lion to clap its flippers in return for being given a fish... Did the pilot(s) do any cool tricks ? Or was it just a boring voice response that sounded a bit like "BUCK OFF" ?