Oh goddess yes. Handed a revolver (cylinder out to show it was empty) to a friend who is ex-military and was a designated sharpshooter … back in the 70s …

He proceeded to play with the cylinder and then flick it closed, because that’s how they do it in the movies >:-(

If you don’t really know how to handle a gun you should say so, and let the owner walk you through how to handle it … assuming they actually follow the golden rules.