Kick to the groin, hard jab to the carotid artery at the side of the neck or the Adam's apple at the front of the throat, a raised knuckle on a fist to the temple, a literal straight punch to bottom rib, bending the elbows or knees in directions they were never meant to go.
Oh, wait, the op half of the meme implies no injuries at all. Something like a Vulcan neck pinch. Newsflash - Martial arts were designed to injure, cripple, and even kill someone in a precise and orderly fashion during times of total chaos like a battlefield during a war. It's even stated in Star Trek the Vulcan neck pinch has a history of violence and if used the wrong way can kill someone.
