look up any word, like cunt:
Hard core gamer, thinks he's a player, yet is a one-girl kind of guy. This guy is bad ass, and will fuck you up if you mess with him.
Guy 1: Hey, I'm going to kick that guy's ass.
Guy 2: Who? The cool kid with the Fedora?
Guy 1: Yeah.
Guy 2: Better not, that's Sebastian. You'll end up in the hospital on life support.

Another Guy 1:Where can I find Sebastian?
A different Guy 2: Tea-bagging you on XBLA.
by ReapersFortune March 31, 2010
66 25
The coolest, talented, helpful, hilarious, strong, romantic, cute, sexy, patient, loving, caring, playful, goofy, hot, boy/man you will ever meet. Some people are lucky to be liked by him. he will do what ever it takes to make a friendship or relationship work. But he's more of the patient guy than a rushing guy. He likes to take it slow and not be rushed. He is easy to express your feelings to him; he loves to express his feelings too.
is that guy your boyfriend? he is such a sebastian!
by someone?? September 11, 2011
33 11
A sexy, awsome, incredible, demoniac, and very.. hum.. tall (?) buttler in the anime Kuroshitsuji (Black Buttler). An anime of gener Shonen ai (subliminal Yaoi ¬_¬)

He protect a brat named Ciel Phantomhive! >0

Hum.. it's all folks.
Guy1: "He is very talented, awsome, incredible, sexy and look like a demon, like Sebastian"
Guy2: "He is Sebastion idiot"

X Guy: "Look Michael Jackson its alivee!!!"
Y Guy: "He didn't is Michael Jackson, He is Sebastian" (<-- They really look-alike)
by Muki-chan May 16, 2011
27 9
Anyone with this named is considered gorgeous. Like Greek God gorgeous. Hotter then the sun. Blessed by the Abercombie Gods. If you have this name, never buy a stove, you can just cook everything on yourself. Seriously. Your that hott. If you don't know a Sebastian Grimberg, that sucks. You have not lived. Look at him, then look at Taylor Lautner. Taylor Lautner doesn't seem so hott now, does he? No. He does not. If this is your name, you probably don't look very good in pictures. Not that thats a bad thing (well it sucks for the ton of facebook stalkers you have) The reason you are not a very good picture taker is your just too gorgeous to capture it all on camera. Which sucks some major *butt. Seriously. Well for your stalkers it does. And yes, you do have facebook stalkers. (Update your Security Boy!) Seriously... Well actually don't. No. Your stalkers will be mad. We gotta get our daily dose of Sebastian! :)
Ex 1:
Olivia: Look! Its the sun! I didn't know it could come out at night!

Cassie: Oh my god, it is! Its hotter then usual!
Olivia: I know! How strange!
Jessica: Thats not the sun! THATS SEBASTIAN!
Ex 2:
Sara: Ava, My stove broike & I can't bake my cookies!
Avery: Oh thats okay, just bake them on Sebastian.
by Sebastian Stalker May 29, 2011
21 4
The most awesome dude out there. He's extremely socially awkward and upon first impression most people believe he is severely angry and an asshole. While the latter may be true, on the contrary- he is a very sweet, "nice young man". He might come across as an apathetic kinda person but he's a total softie and teddy bear. He's probably one of the weirdest people you will ever meet but that just adds to his levels of awesomeness. He's also freakishly smart and around 99% of the time you have no idea what he's saying but it sounds smart and he's adorable when he does so, so you just go along with it and pretend to understand. He's also kind of insecure which is fucking stupid because he has no reason to be. He always knows how to make you feel better and he's just such a good guy. When you meet a Sebastian you need to cherish every minute because you don't know what you have until it's gone ;(
Sebastian sends cute pictures of puppies to cheer friends up!
by greekchick1234 June 26, 2013
17 2
1. That one red crab in The Little Mermaid
2. The Phantomhive butler in Kuroshitsuji(black butler) He is very popular among fangirls.
1. Sebastian, is the most pimp crab ever.
2. Sebastian Michaelis is one hell of a butler.
by one hell of a fangirl December 24, 2011
19 4
Street term for crabs

aka Sebastian was the crab in The Little Mermaid.
Bitch yo mama gave me Sebastians.
by JB & VC March 26, 2009
12 5