Anger clouds our judgement and makes us act irrationally. It makes all manner of logic and clear thinking go out the window, and all you can think about in turn is getting back at the person who hurt you, you think in retaliation. This is why fighters are taught to control their emotions, because once you've angered your opponent, gotten into their head, you control the fight. You've already won. So I am confident that if someone decided to smack someone around, they shouldn't be quite so confident in their decision, because either their anger has obscured their judgement, making them think much less rationally than they think they are thinking, or they are a naturally violent person with something much more deeply disturbed in them.

I understand this is a joke shirt, but it's also a real way some people think. It may be a joke shirt to you or me, but somewhere out there someone bought this thinking the company nailed how they perceive certain situations.