This is somewhat OT, but I had a GA at ORD one time on a mainline flight insist on gate-tagging my bag because "the flight is full and there won't be any room." Of course, they did this to so many people that when I got on the plane, there was tons of room in the overhead. So I went back to the jetway and grabbed my bag. The FA saw the gatecheck tag and absolutely would not let me bring it on board. I was