Note: Only do this as a real last resort.

If you’re being shot at, the best course of action is to run away. However, if you lack any sense at all, you might try to fight back — and if you have a gun, you might be tempted to pull this incredible stunt.

It’s pretty much impossible in the real world, but if you set up everything just right, you can shoot a bullet into another bullet, neutralizing both of them in the process. The amount of work that these people went through to set it up is very impressive, but if you’re just here for bullet-on-bullet action, skip to 17:16.