Top Definition
The Rule is an acknowledgment of one's own mortality and is invoked as a means of avoiding activities, people, movies, organizations, books and TV shows that are very likely a total waste of time.

In essence, it means that each of us only have a finite number of summers left, and those summers aren't to be frittered away on meaningless crap.
"No, I didn't see the Hannah Montana movie; it runs counter to the Rule of Finite Summers."
by IslandMyk December 26, 2009

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