Top Definition
Acronym for "The Hitchhiker's Guide to the Galaxy," a very successful sci-fi comedy series of books, radio shows, computer games, and an unsuccessful TV series, written by Douglas Adams.

The popularity of this work is such that Adams became a fixture in the sci-fi/gaming culture. This acronym is typically seen on discussion boards and in chatrooms.

There are many books in the intentionally innaccurately named "trilogy" of HHG2G series. The first is simply called, "The Hitchhiker's Guide to the Galaxy."
My favorite HHG2G book is <i>So Long and Thanks For All The Fish.</i>
by Trenchcoat November 11, 2003
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