Avid readers of practical betterments should note: here I refer to the classical meaning of the word keyhole: a hole you put your key in and not my own definiti

Avid readers of practical betterments should note: here I refer to the classical meaning of the word keyhole: a hole you put your key in and not my own definition a hole you put in your key. If some of the lubricant gets around the pins, then one is lubricating the hole in the hole you put your key in.