How about semi-auto pistols that somehow allow multiple trigger pulls after the mag is empty? "Click click click." Just give the character a revolver if you want that effect!

That's my second cringe after watching them rack the slide every time they pause (with nothing ejecting). The morons could have the character tactically reload instead.

For people that don't understand guns, this would be like seeing someone jumping in a car and putting on the parking break before stepping the gas; and seeing this in nearly every movie.

Or imagine whenever people are filmed eating, they are putting empty forks in their mouths, or using salad tongs to eat steak. It's dumb.