Sebastian Seahorse

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 17, 2011

Pulling a Sebastian

When a teenager with a G-Eazy haircut takes off with a friend or family member and says they'll be right back but spends the entire weekend away from home without even texting or calling his dad.

"My son said his aunt needed some help setting up some balloons yesterday morning and I haven't heard from him since. He's pulling a Sebastian!"

by Lsrgnto October 3, 2015

sebastian sezonenko

A Russian boy that sells sqwinchers

Sebastian Sezonenko is a Russian boy that sells sqwinchers.

by RUSSIAN BOY June 15, 2017

Sebastian Vettel

German F1 driver currently driving for Aston Martin Cognizant F1 team. He is a 4 time world champion, winning his titles consecutively between 2010-2013 with Red Bull Racing and also winning the constructors championship consecutively for 4 years during this time.

BUT HERE COMES SEBASTIAN VETTEL!!!

by guif December 16, 2021

Sebastian

An idiot who has no common sense. He will hurt your feelings and mess with your head. Never trust Sebastian.

Person 1: Sebastian is such an idiot
Person 2: I know! He's so ugly and dumb

by A C00l Person June 8, 2018

Sebastian Stan

Romanian god.

Sweet little puppy dog who loves space and pizza.

Frequently runs into fridges
Muscles of steel, but also a ray of sunshine
Also known as sexyseabass and wintersoldier

“i don’t like sebastian stan”
“Liar.”

by sergantbucky July 13, 2021

Doing a sebastian

When you snitch on the squad, to Luke this is called doing a sebastian

Snitchy,bitchy
Doing a sebastian

by rcc September 12, 2019