A sexual position in which the person who will be penetrated puts their legs behind their head. After doing so the person who will do the act of penetrating commences with penetration.
by Syd Manson December 28, 2009

by apmessi December 9, 2016

"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

When a man has an unusually small unit, sometimes referred to as an inny in cold weather situations. Less than 2" long dick
by o.t. guy December 10, 2010

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.
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 4, 2010

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.
by idk what my name is lol November 12, 2020

by cunts fucked May 18, 2014
