Keep the muzzle pointed in a safe direction no matter what. Even when someone asks you a question and you turn around- keep the muzzle pointed at the target, and not at the person in the stall next to you. I'm not making fun, I've just personally seen it happen too many times.

It's really scary when you look down the barrel and see the big gaping hole of the hollow point (illuminated by the reflection of the overhead lights shining off the polished copper) staring back at you. It sticks in your memory. Especially when you know their finger was on the trigger the whole time.