Top Definition
"Mary-thon" - Smoking a whole lot of marijuana over an extended period of time in one sitting.
"This April 20th we'll be having a Marython downtown so be sure to bring your doobies."

"5 ounces, 7 balls of hash and an entire weekend...looks like we might have a Marython on our hands!"
by The Content Ninja May 04, 2013

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