When one person is engaging in the act of fisting another persons asshole, then proceeds to extend their index finger outwards to allow deeper penetration into the receivers asshole.
There is nothing better than giving the girlfriend the old Dark Marlin unexpectedly, especially when i'm wearing my class ring
by dookla March 10, 2016

This phrase, also known as "Marlin's Didgeridoo" came from the Australian TV show Angry Boys in 2011. The direct quote was the character Gran insulting an inmate by saying "Go blow your didgeridoo Marlin". This sparked an internet meme of facebook groups or like pages about Marlin and his "didgeridoo".
The next level up from this has become Marlin's Nipples. It's used as a swear for something surprising or extraordinary.
The next level up from this has become Marlin's Nipples. It's used as a swear for something surprising or extraordinary.
Marlin's Nipples that's a long car!
You don't get it do you; Marlin's Nipples, you don't get anything!
Jake R is such a Marlin's Nipple!
You don't get it do you; Marlin's Nipples, you don't get anything!
Jake R is such a Marlin's Nipple!
by Dekkkers June 16, 2011

Is a not so common girls name but if a girl is called Marlin they are usually really friendly and smart, there is a chance that they are kind of insecure about their looks while they're actually really pretty. It's fun to hang around with a Marlin and they will do anything to chear you up if you're sad since they can show alot of empathy .
by aNoN579 February 24, 2017

When a girl's anus is too constricted for a large erect penis and either the male or female uses their index finger to prepare the ass hole for penile penetration.
by Brown Jon March 3, 2016

A gun that I found in my friends living room that I thought was cool until he yelled at me to not dry fire it, he knows alot about dry firing ifkywim.
Woman (non existent in his life): Honey there's a squirrel in our house
Man (Double): Go grab The Marlin .22 Rifle from the couch
Man (Double): Go grab The Marlin .22 Rifle from the couch
by BubbleAssFuck March 17, 2025

The ugliest, most annoying, stupid, weird, person you will ever meet. Never trust them. They are named after a fish for a reason.
Marlin sucks
by addidabaddie February 27, 2022

by beemoody September 5, 2016
