"This tradition was passed down to the UK mains plug, the single most painful plug to step on."
I once owed a house where the previous owner had come up with an interesting wheeze to provide power in the garage. There were a number of sockets in the garage. One of them could be connected to a socket in the kitchen by means of a flex with a plug on each end. If the kitchen end was plugged in the plug on the garage end would have been even more painful than normal.