Sebastian

The type of guy that will cheat on you multiple times and blame you when you find out.

Typical Sebastian calling girls over the night his girlfriend goes on a trip

by Nelly Gettin September 26, 2017

Sebastian

A typical asshole, many would say obnoxious. He isn't a kind-hearted babe but in fact a complete dickwad. You'd think that he would be the sexiest dude ever but in reality, sebastians are a very rare breed. they come in only one pack of themselves and each and every one is unique. some are downright dastardly and some are cool.
but for the most part their assholes.

"dude, that guy is a total asshole"
"I guarantee you his name is Sebastian"

by 23456654321234567890-=-0987654 November 13, 2017

Sebastian

A male name, resembling disturbing and impulsive filth.

You probably don't want to go for that guy, his name is Sebastian.

by TheCommissoner October 2, 2016

Sebastian

Sebastian is super smart dude that wants to go to MIT but is a complete duchebag and has big gae. He is just a bitch ass punk like his friends. He also makes his teachers fall in love with him and sucks at wrestling.

That guy is gay, he has to be a sebastian

by gay bo1 June 5, 2018

Sebastian

Also known as Seb, is a nasty combination of the worst things ever created. They smell, are full of themselves, bad a sports, curse a lot, and remove themselves from any social contact whatsoever. He thinks he can get any girl he wants when really, when they see him, they run away screaming. Sebastians are really ugly and have a bad laugh, smile, and body. Dont get too attached because they get kicked out of every school they go to. He is a nasty bitch that lies and is a piece of shit. Stay away...

What is that thing?
-- Oh, its a Sebastian.

by Curly Cue June 20, 2014

Sebastian

A bitch ass nigga who can’t stand up for himself

“Its not that serious bro” - Sebastian

by Lilmoserr November 19, 2019

Sebastian

The look of a penis with plenty of charm based on a character in a Disney movie. The lip of a crab is the single most noticeable thing in the movie the little mermaid. The ledge of huge muffin top penis is characteristically similar to this little crabs large lip.. thus why you call your penis Sebastian. Significant land mark and popular hump for a good scratch.

Um excuse me baby but can Sebastian crawl off the beach and come into the sea? Under the sea! Under the sea!

by Joseph5555 July 24, 2018