Term first found in the lyrics for SR-71s song 'Right Now'. Nobody really knows what it means, but Todd in the Shadows estimated it might stand for a fake, slutty girlfriend.
'She clings to me like cellophane, fake plastic submarine, slowly driving me insane but now that's over'
by -Diamondjolt July 28, 2023

I motorboated her, but she wanted more, so I plunged down below because she needed some submarining.
by kinkybabysteps April 3, 2024

"The Breaching Submarine Feels way better then edging."
"Im gonna go Ocean Gate my Breaching Submarine."
"Im gonna go Ocean Gate my Breaching Submarine."
by 9saf^ August 14, 2024

A parent who occasionally resurfaces only to disappear without warning. May be watching you without your knowledge, most likely not though. Potentially has nuclear capabilities and can attack your emotional well-being without warning and with extreme prejudice.
Sarah: My mom is always watching over me. She is totally a helicopter mom!
Caitlynn: My mom pops in once a year to ask how I’m doing and borrow a few dollars. She’s totally a submarine mom!
Caitlynn: My mom pops in once a year to ask how I’m doing and borrow a few dollars. She’s totally a submarine mom!
by Weak weasel January 16, 2022

by D Kep November 25, 2016

(n) the act of releasing fecal matter while performing anal with your girlfriend/boyfriend while the male genitalia is currently inserted in the anus.
Verb tense: muddy-submarined
Verb tense: muddy-submarined
Bro....my girlfriend let me muddy submarine her last night, she can't move now....great success!
Or...
Jim, my girlfriend just gave me a muddy submarine and now I can't walk or sit down.... not great success
Or...
Jim, my girlfriend just gave me a muddy submarine and now I can't walk or sit down.... not great success
by The Red October March 20, 2017

by RINGO AND MACCA ARE THE SEXIES February 22, 2025
