While having intercourse in a bathroom, you do a girl from behind and give her a swirly at the same time while making horse noises.
I just pulled The Seahorse on Becky in the bar last night
derogatory term for Swedish men because they are given maternity leave when their wife is going to have a baby, so they also stay home to take care of the newborn (like male seahorses that take care of baby seahorses).
That (man's name) is such a fucking seahorse, slacking off from work cause his wife popped out another kid...
when you are drunk and fucking a girl, you pee inside her
Bob hooked up with Jane and gave her the seahorse.
When a male ejaculates into a females mouth, in which she returns by spitting it into the males anus. Just like a male seahorse carries the offspring.
Ryan received a seahorse from some chick in a chevy truck.
A sexual position, where the female gets penetrated while being on top of the male.
Otherwise known as 'woman on top'
"What is your favourite sexual position?"
"Oooh...definitely seahorse"
When a guy/girl is bent over their phone, while in stature that resembles the appearance of a sea horse (and usually on social media).
That guy has been seahorsing on his phone for an hour.
That girl looks like a seahorse when she surfs Facebook on her phone.
You seahorsed a lot last night while you were drunk.
when there are a couple of sluts and then you look a little later and they multiplied like the asexual reproduction of a seahorse
Jim said he went bowling and saw these two girls, then looked 10 minutes later and ther were 15 girls, they reproduced like a seahorse!!