A drinking game where a cup of beer is set up then a shot of rum then a shot of vodka then a shot of tequila and finally another cup of beer.

All must be drunk in a row. Completion demonstrates a drinker's Iron Liver.
John: Dude you were totally F@%$#@ up last night.

Joe: I know man I was in the marathon.

John: Howdya do though?

Joe: Oh I've got an Iron Liver for sure.
by TheIronLiver April 22, 2009
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Masturbating for so long that your wrist-mounted fitness tracker thinks you have walked 26.2 miles
"My wife is away this weekend, so I'm planning a hand marathon"
by The Otter's Pocket October 15, 2023
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A series of bad dreams in a single night.
"I slept terribly, as I suffered from a night-marathon."
by rickbbiking April 21, 2013
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A movie marathon where mambre have a flirty, romantic, evening.
There having a mambre-movie-marathon over there. Mama Mia. Here we go again. Ughhh.
by Bnarratologist February 18, 2022
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When you listen to a specific artist and their entire catalog in order to prepare in seeing them live (within a day or a week or even longer)
Going into marathon mode now for that Nickelback show tomorrow.
by Gideon Gordon Graves August 17, 2010
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