When you anal-ize a pregnant woman in a bathtub.
"Last night Sally and I did the Pregnant Seahorse. It was awesome. I was blinded by the awesomeness of how awesome the awesome seahorse was."
by Trevor and Robert April 30, 2009
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Definition is dependent upon usage. it can be dirty when placed inside of sexually related sentences or it can mean when someone tries to bring you down or is hating on you.
Brittney: You're such an ass
Kerry: Yeah you're so mean
Phil: Why's everyone tryin to salt my seahorse

or

Kerry: That's dirty. like salting my seahorse.
by Phil's so nice January 04, 2010
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When a man has an unusually small unit, sometimes referred to as an inny in cold weather situations. Less than 2" long dick
Joe's dick was so tiny, we said he was Hung Like A Seahorse.
by o.t. guy December 09, 2010
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a male seahorse give birth (idk why) but when he gives birth it looks like he’s having a seizure, the ugly rat fucking children come out of his stomach because he’s tony lopez and eats little kids.
woah that seahorse giving birth
by idk what my name is lol November 12, 2020
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A girl the wants oral sex performed on her

"I want you to lick my seahorse"
Oral sex I want you to lick my seahorse
by cunts fucked May 18, 2014
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A phrase used as an insult from one to another.

The receiving end of the insult must be male otherwise it wouldn't make any sense and that person would automatically win the insult battle.

The exact opposite of being "hung like a horse".
Guy#1: "Dude, Shut-up I'm hung like a horse!"

Person#1: "Yeah... hung like a seahorse!!!"

Person#1: "HAHAHAHA I win one to nothin!!!"
by Freed-olay January 10, 2008
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A guy who is crusty and eats seahorses
That crusty ass seahorse eater is searching for MORE seahorses to eat
by Seahorse Eater April 20, 2017
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