Slocking. It's nothing new. Rappers Kool G and Tupac referenced padlocks in socks years ago. And if softcore adult films on Netflix are your cultural reference points of choice, [spoiler alert] Red got slocked by Vee in the penultimate episode of the second season of "Orange is the New Black."
Take a prison-issued padlock. Put it in a sock. Beat your fellow prisoners. It's ingenious and not altogether unheard of. And that's these two prisoners' point: Why are prisons still handing out padlocks? The two slocking victims argue that ignoring the obvious problem is tantamount to cruel and unusual punishment.