Muggle

Muggles wandering right past a cache.

A Muggle is a non-Geocacher. It is generally accepted to be bad form to disclose a Geocache location to a Muggle because they might take or trash it.

To be a true muggle is to be unaware of geocaching. For example, if you are a geocacher then your spouse is in by default, unless of course they have no idea why you duck out for the paper and come back in three hours.

The term "Muggle" originated in Harry Potter novels, it was a term meaning non-magic user.