When a man (usually of the homo variety) desires to carry a child for nine months
George: Did you know male seahorses carry the babies?
Alexander: Really?
George: I wanna be pregnant...
Alexander: .....GAAAAY!
George: It's called Seahorse Syndrome, it's a real disease!
by CousCous March 28, 2014
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Based on a Mega Man X character, a 'toxic seahorse' is anything that makes as little sense as possible.
My friend John Paul makes about as much sense as a toxic seahorse.
by xxexplosivoxx May 22, 2003
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The act of jacking off your horse while poring salt water all down your partner's back.
Eew! Stephen, this guy just told me that he liked giving sebastian seahorses!
by PaperZombee July 16, 2011
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As you're fucking your special someone...the man begins to do the "white boy can't dance" move while inserting his penis into her vagina.
PJ was doing the mechanical seahorse while screwing Luke up the ass.
by Katiefdgjgdh March 3, 2007
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the bionic seahorse is a sex position featured in dane cook's vicious circle. it is the move in which the man raises one of his legs (as if he were stretching his quads), holds on to his foot, and does the motion of a seahorse moving through the water.
i totally cheated on tina with martin who can totally do the bionic seahorse
by steve liu October 31, 2007
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The seahorse is performed when a sexual act takes place snorkeling in a body of water ( pool, ocean, lake, sinks-for little people). Once ejaculation is about to be reached the penis is removed from the orifice of sexual choice the female is pushed below the water surface and the ejaculate is released down her snorkel.

This can also serve as a good source of protein for the female if stranded at sea.
On a cruise in the mediterranean I met a real freak just south of Sicily. We spent the day snorkeling, the passion was hot and she suggested that I provide her with a mouthful of my manhood. Lets just say that I'm glad the snorkel was extralarge. As she guzzled down my lost offspring I embraced the moment and that was when the spawning seahorse was born.
by theorighotcarl August 2, 2010
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A term you call someone or something that is useless
Fred:hey Jim can you help me hook up with this Jacob twiggs

Jim:nah I'm good fam

Fred:you're about as good as some "seahorse kneecaps"
by PrapyJhonsPiza April 25, 2017
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