You ever hear of “cement shoes”? Sure you have. Most people don’t know that they never really existed in real life. There was only ever one documented case a couple of years ago, probably from someone who watched too many movies.
Nobody does it because it’s actually a really tough way to kill someone. See, it takes time for the cement to harden. So you either have to kill the guy first or drug him or keep knocking him out while you wait. It’s a process. But mama wanted to send a message. It had to be shoes. She would later proudly say she invented the cement shoes, and I’m inclined to believe her.
From – Daredevil Vol. 6 #8