Ditto on what Tom says. While it is understandable that the average spectator might not know I am trying to concerntrate on not destroying my jet by doing preflight inspections, checks, etc...and therefore he and his kid may be inadvertently asking annoying questions before your flight, the more unacceptable part is that It always seems that the local yokel at your hobby field always wants to come by and shoot the breeze right when you are about to light up your turbine... "so what's up? did you see the game last night? blah, blah, blah". Game face is necessary. You get too relaxed, stupid things happen, like starting ingnition, propane lights, and you realize that your kero valve is still shut, etc...

game face saves jets, and sometimes body parts, or possibly lives...

Shaz