1. Do powerful punches knock out people's teeth? Does it depend on where the blow ends up landing? Very curious about this. 2. Can a powerful enough punch to someone's skull accidentally kill them? 3. With all of this, if the person is high on amphetamines the whole time, do they hit much harder? The third one is important because the scene in question involves someone on amphetamines getting enraged, and almost killing their mother while destroying every piece of furniture in the house.