Inserting your penis into the vagina or anal cavity roughly, without lube.
My girlfriend kept tickling me, so I gave her a dry submarine when we went to bed, in revenge.
by Banettefan83 September 27, 2019
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The sexual act of scissoring underwater.
Guy 1 - Jesus... Did you see the video with the two lesbians?
Guy 2 - No, what were they doing?
Guy 1 - The Cat Submarine.
by CWRty July 1, 2018
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