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 01, 2018
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Heavy fecal projectiles that's surfaced in the toliet after being launched from the anus usually after a long traffic jam in the intestines
Bob finally released some butt submarines after the bottleneck in the bowels begain to break up
by BIG T 49 January 30, 2021
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What has lots of rows of teeth, eats anything it can find floating in the ocean and consists of massive chunks of meat when blown up by a scuba tank and a rifle. Sharks, sharks do.
We cut open that meat submarine and there was a license plate from Maine, a tire and half a man.
by talusanpurer April 04, 2016
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1. (adjective) a pregnant woman swimming

2. (noun) a submarine made out of human flesh
Commenter: a pregnant woman swimming is a human submarine

2nd definition---

look at that foreskin submarine!
by amogusrule34 July 23, 2021
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1.(adjective) A pregnant woman swimming

240000000000: (noun) a submarine made of human flesh
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by amogusrule34 July 23, 2021
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