netsecurity
Shooter
Easy, point it at the floor, pull the slide back with your left hand, push the slide lock with right thumb.
I've never been able to reliably lock the slide back with my right thumb, perhaps because my thumbs are double jointed, but I'm going to practice until I find a way. Keeping the muzzle in a safe direction at all times is the most important rule of gun safety, so I'm glad this topic was brought up, and we can all learn from this mistake.