When a napkin is used to give directions to a person or describe the location of a certain place by drawing a map on it when other paper sources are scarce, for example when having coffee at a cafe.
While at a cafe:
Friend 1: "Hey, I'm going to New Zealand next week. aren't you from New Zealand? Where should I visit?"

Friend 2: "I should draw you a map, but I don't have any paper!"

Friend 1: "Here, use this napkin to make a mapkin!"
by cyyy May 23, 2010
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