P.R.O.V.E.
Aim the gun where it won't hurt you. Empty the gun completely. Check the inside of the chamber and the magazine. Then look into the barrel.
"I aimed the gun at the wall. Then I got shot in the leg.", @GunBroIsDumb
"I emptied the gun and still got a bullet in the face.", @GunDude2022
"I checked the chamber and still got shot in the eye.", @GunNoob420"