n. A derivative of the "motorboat" in which one places one's lips and cheeks against the vagina, then shakes the head from side to side, keeping the lips slack, so as to produce a "bu-bb-br-br-bb-bur-bu-ber" sound.

(See also: motorboat)
She said she'd seen and done it all, and nothing I did could surprise her -- but then I put on my best Sean Connery and gave her the submarine.
by MSOEnunciate September 20, 2009

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To motorboat a girl underwater
"Come take a swim with me, I'd like to Submarine you"
by Mattyg169 August 23, 2009

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A sexual act involving a man eating out a woman's vagina while masturbating. Just before the man cums he looks up at her and when she notices him looking at her he says "Target locked". While the girl is still in confusion he says "Fire Torpedo!" as he jumps up and cums in her face. Then walks away saying "Target Destroyed"
"Kellsi was so surprised when I gave her that submarine for her birthday"
by DJ {Taco} September 15, 2008

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is when you butt fuck a lady and bust a nut inside her asshole pull out and wait for your cum to drip out all the way to the front of her pussy then lick from the front of her pussy all the way to her asshole tasty
tony gave me a submarine last night damn.
by helygtown March 01, 2008

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(verb) To get someone drunk without their knowledge or to trick someone into drinking more than they intended.
Sean: Jim what happened to you last night?
Jim: I don't really remember, I think Phil submarined me.
by Redfield04 December 02, 2007

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a sandwich with many ingredients
Let's get a couple of submarines
by Light Joker June 27, 2007

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when you take a long shit but half of it goes down the pipe of the toilet so you cant really see it anymore.
"i took a shit it was a submarine though so i didnt save it."
by the kid is noiceee June 07, 2007

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