The act of going to mormon.org and trolling ONE missionary for an entire 3 hours without them leaving
Bill: Hey man, you wanna study for that math test?
Killroy: Forget the test! Tonight, I'm gunna beat the Three Hour Mormon Power Marathon.
Killroy: Forget the test! Tonight, I'm gunna beat the Three Hour Mormon Power Marathon.
by duplicitycommon October 24, 2011

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.
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.
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

a date that lasts longer than normal, maybe 2 or 3 days... Usually involving a lot of long lasting tantra sex.
Yo John, what time did you drop off Jane after your date?
"Nah, man. I didn't drop her off. She stayed for 3 days we were marathon dating!"
"Nah, man. I didn't drop her off. She stayed for 3 days we were marathon dating!"
by southbronxems August 6, 2007

A rite of passage done by internet users regularly in which they spend a lot of time searching and listening to a bunch of songs they forgot they loved, because life sucks nowadays and nobody wants to admit it.
by helloitsunknown August 25, 2022

The combined effects of energy-drink enduced awakeness and constant exposure to artificial light and digitally processed sound. (Headaches, sensitivity to noise, sensitivity to light, crabbyness, unintentionally quoting and/or acting out scences from marathoned movies)
by Asthenthemos January 2, 2015

A term coined by the 2021 visual novel comedy "Class of '09." The main character, Nicole, describes it as: "He tries to make you question society's hatred of pedophilia before he actually goes after you. So then you'll feel bad if you tell on him afterwards." "A predator that plays the long game, a marathon pedophile."
by sunfighteryoriichi July 2, 2024

an fnf song that has multiple characters and spans at least five minutes, can have a near infinite amount of time
by BaldiEnjoyer2310 December 8, 2024
