I have learned from many movies that it is safe to swing guns around the room, pointing them at my friends in an animated fashion when I talk, with my finger on the trigger. I have also learned that the best way to shoot a pistol is with it lying horizontal to the ground. Also, you do not need hearing protection when shooting in a small space, like a 44 magnum in a car, because the shooters never stumble out of the cars with their ears bleeding and going "what did you say?".
Except for Archer.