It is when you go to a bar and order one cocktail and leave after finishing it to move to next bar and repeat the same till you puke off the window off your cab.
We were on a another cocktail marathon last night and we run 12 bars before passing out next to a dumpster...
by Yomamacooksitbetter August 30, 2022

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)
by Gideon Gordon Graves August 17, 2010

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

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 wish of certain death in which a individual(s) go get a milk shake, and then go to a new milk shake stand in rapid succession. This is repeated X10 and each milk shake must be entirely consumed before the next milkshake is consumed.
by SevericK BooM June 27, 2017

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
