If you've ever watched the Ultimate Fighting Championship (UFC) you've probably realized that the people who compete in the combat sport are real human killers capable of maiming any ordinary person on the planet. By the end of their bouts, they are routinely bloodied, knocked out, or even taken to the hospital with broken bones.
I guarantee you, you would never want to meet any of these people in the octagon. Or anywhere where they could potentially be angry and looking to tear someone's head off. Because they could actually do that. Literally. COWER IN FEAR!