ELI5: Explain Like I'm 5

Mouse-holing

Okay, so you know how when you play hide and seek, you sometimes hide in a secret spot so nobody can find you? Well, sometimes workers who fix things in big buildings do the same thing. But instead of hiding, they make a small hole in the wall to get to the inside of the wall without tearing apart the whole wall. This hole is so small that only a mouse could fit through it. That’s why it’s called a mouse-hole. It’s like a secret tunnel for the workers to use so they can fix things without making a big mess. Pretty cool, huh?
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