A used, filled, condom left around somebody's house. Called a sub because of shape and it's occupation by semen.
I sunk my submarine and shipwrecked her on your night stand. Sorry.
by hot carl L.U. 455 May 30, 2011

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A large rounded poo, which rests at the bottom of the bowl. Often refuses to flush.
I fled the scene, and the poor fool who used the toilet next would have to sit on my submarine
by Triumpharter May 09, 2011

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When a couple, Man and Woman are sharing a hot tub together. Unknown to the woman, the man is jerking off under the bubbly jets so she cannot see. Just before the man cums, he sticks just the tip above the water and screams "FIRE TORPEDOES!" and blasts on her face, before submerging again.
Oh Fred your Submarine ALWAYS catches me by surprise
by CuddlyCuddleFish March 08, 2011

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When a women gives you oral pleasure...Voluntarily with a quickness
She gave me SUBMARINE like pleasures
by CHECKMATE & JO'EL the STUDENT September 05, 2010

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A motorboat that comes unexpectedly.
"Ya she had some amazing tits. I definitely submarined them."
by SarahRichmond October 13, 2009

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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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