mainline

Weaponized wireless telepathic communications and informations system used by covert US military-intelligence in the Targeted Individual program.

The military had their own voice-to-skull...they called it the mainline... it was voice-to-skull.

by Medicine Owl February 8, 2023

Mainlining

The act of binge-watching or binge-listening all episodes of a podcast or all episodes in a season of a TV show without breaking for sleep.

Mackey: Where were you last night?
Buddy: Aw, man, I was mainlining "Sense8." After the second episode, I was addicted!

by GypsyBowl July 5, 2015

Mainline

A person's main significant other, even though they may be dating several people at once.

"I got a lot of chicks, I ain't gotta lie. But you keep it real, so you my mainline." - Ray Vicks

by BRNOLA July 13, 2009

mainlining

the act of taking internet lingo and applying it to real life conversation

matt: I walked by a group of kids taking a test and said, "fucking scrubs."
joel: dude, you were totally mainlining.

by Taxt April 17, 2009

SMT Mainline

A Canadian Youtuber who is known for his model train content and taking shots of maple syrup he is also allegedly a foamer

Did you see SMT Mainline’s video of that CP heritage Unit

by MinnesotaModelRailfan August 5, 2020

mainline mom

Goes to country club, wears lululemon tennis skirts. Everything is Vineyard Vines and Monograms. Cadalak SUV and marries older rich husbands.

You are a mainline Mom

by Tomrocks February 25, 2018

Jack the mainline

Doing heroin intravenously in the style of Robbie Williams. See also rock the mainline.

From Robbie Williams' "Rudebox":

"Ok then check the tan line
Make your body shape
Like you're stood on a landmine
Call me on my mobile
Not the landline
And jack the mainline
At the same time"

by Some Fresh Money September 8, 2007