Submart 

To start a thread on an online forum that has great potential for drama, intrigue, and humor, only to abandon it immediately by not writing any follow-up posts whatsoever. Such behavior leaves fellow users unsatisfied, frustrated, and/or concerned for the well-being of the original poster (OP).

Originated on the University of Texas forum Shaggybevo.

"I can't believe this guy would start a thread about his wife wanting to bring a hot lesbian into their marriage, and then totally pull a submart."

"My girlfriend of seven years dumped me and I need a thread telling me not to be a cunt, sack up and live"
-I Love Submart

Submart by CurlyDumps July 23, 2013

The submarine game 

The player lays on their back in the bathtub and attempts to make only the tip of their dick peek out of the water like the periscope of a submarine.

Mai: You sure took your time. Were you thinking about me or something?...

Sakuta: Actually, I was just engrossed in playing the submarine game

The submarine game by karabu_ February 20, 2019

Bat Submarine 

When someone makes a comment and someone else repeats it soon after, claiming it as their own. Often, but not always, trying to one up the original idea.

Emmet - We could build a submarine!
*short delay*
Batman - We could build a Bat submarine

Bat Submarine by Spankie, EarlyDays January 27, 2015

Submarining 

When you stop seeing someone and cut off all communication and then reappear after some time and act like nothing happened.

Guy: Hey what's up
Girl: Fuck you John it's been 8 months. You think I'm in to submarining?

Submarining by Hey I'm walking here October 28, 2017

submarine shot 

Similar to a "floater shot" aka "floater", but at the bottom of the cocktail.

Tamara: My husband was lit last night, I apologize for him at the wedding, he was plowed and loud.

Brie: I had a blast with Adam - classic Adam. He was ordering everyone bushwhackers with floaters, though ordering his bushwhackers with a submarine shot as well as a floater!

submarine shot by the comand'r November 11, 2021

Los Submarinos 

From the movie "Zombieland", it is what Twinkies are called in Mexico.

Tallahassee- Mexico. You know what they call Twinkies in Mexico? Los Submarinos. That's where I'm headed amigo."

Columbus- "Whatever."

Los Submarinos by ForTheHuynh January 4, 2010

Submariner 

From the depths of the Abyss we rise, silent and unseen. We live our lives in silence and darkness, bringing death to those that oppose the American Way. The Army may march, the Air Force will soar, and the Marines will crawl, but a Submariner is a force of nature that is unseen and unheard until it is too late. From beneith the waves we bring death from above and below. We rip the stars from the heavens to rain destruction around the world. Hidden by wave and shadow, escorted by the Leviathan, Posiedon himself bows to us. Fear us, for we are the unknown, the unknowable. We are Death.

Seaman Shmuckatelli, qualified Submarines.
*Ding Ding, Ding Ding*
*AWOOOOOOGA! AWOOOOOOGA!*
(Later, on shore)
Women: Oh my god, he's got dolphins! I want him so bad, he's a submariner!

Submariner by Fleming September 19, 2006