Shown above is a patent illustration for a peculiarly masochistic device called the Mama Robot. The South Korean patent is held by 정인필. Check out what it's supposed to do.
The Mama Robot is creepy in many ways. As far as I can tell, it's a device that allows children to punish themselves when they know they've been naughty but their parents are away.
The child is able to decide how many lashes with a cane they deserve, and the Mama Robot will then deliver the punishment. As it does so, the prerecorded voice of the parent will admonish the child, but simultaneously the Mama Robot will weep "such that the sad feelings of the parent punishing are conveyed to the child."
Since patent illustrations are often simplistic and hard to date by just looking at them, you may get the idea that this is pretty old by its purpose. No, the patent was granted in 2017! You have to wonder what potential manufacturers think of the idea. Read more about the Robot Mama at Weird Universe.