Top Definition
When a man's semen ends up on his stomach, either by his own handywork or with the help of another; inspired by the species' method of reproductive development wherein the male carries the embryos on his stomach region.
I didn't have any tissues near by so i just seahorsed myself and passed out.

She doesn't like to swallow, so she usually just gives me the ol' seahorse.
by scrote-dogg June 02, 2007

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Photos & Videos
1. a species of aquatic animal, especially one that is so beautiful and cute
2. an aquatic animal that looks good on blankets, towels, little bags, etc..
Usage:
I love the seahorses, they're so beautiful and cute. I love 'em

Seahorses. Forever.
by T-roy Jaankins March 26, 2011

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A guy who is totally smitten with a girl. If a guy really likes a girl, then he is said to want to have her babies like a seahorse. (Much like if a girl really likes a guy, it is said that she wants to have his babies.)
"Yeah, we've been seeing each other for several months; this guy is totally my seahorse"

"Do you want to have her babies like a seahorse?"
by Ellie A. Nor May 05, 2006

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A Penis and a vagina at the same time
*Nick you are a seahorse
*Because we don't want to be a seahorse
by Sunflower sunhat December 01, 2016

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When you tickle a person behind the knee with your foot: Used to induce an orgasim. Not a 100% guaranteed.
"Hey, today in business class. I gave my friend a seahorse."

"Really?"

"Yeah, but he didn't come"

"Shame..."
by SSeahorse January 13, 2012

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Soft and offensive. Just like you.

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A man who stays at home to take care of the kids. A stay at home dad or house husband with children.
My husband is totally a seahorse, the kids love him.
by Skeren Dreamera May 06, 2016

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Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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A quarter-note rest in music, because of its shape.
This music is boring! There's nothing but seahorses for twenty bars!
by pentozali March 19, 2008

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt