An annoying kid who doesn't listen and doesn't obey his parents. This kid is also obsessed with looking up his name on this site and uses the definitions he reads to define his personality. He has to be shutdown in order to get him to comply to what he needs to do.
Sebastian does not listen to anything. Sebastian doesn't know who he is. Sebastian needs to look up his name for confidence. Sebastian needs help.
by Sgt Chaos October 15, 2014
Get the Sebastianmug. Probably a really good athlete with 50 girlfriends at the same time and is super hot and has a large penis and is a party monster
by Girl123457643 October 9, 2020
Get the Sebastianmug. 
Sebastian is the most amazing boy you will ever meet. He patiently listens to all of your rants and always knows what to say. He plays a lot of musical instruments very well, and usually has an amazing singing voice. A Sebastian always knows how to make you laugh and tries his best to understand you. A Sebastian is always there for you. A Sebastian is somebody you can trust with anything. Sebastians are usually quite shy, but when you get to know one, you would never find a better friend.
Cherish your Sebastian.
by Startamer December 13, 2019
Get the Sebastianmug. Sebastian-"Im a gnome"
by &Fuck you& June 8, 2020
Get the Sebastianmug. sebastian is a type of guy who will always be by your side and will always help you in a heartbeat. he is not incredibly dumb but also not very smart either but hes 100% weird which makes him more funnier than he already is. sebastian has gone through a s#@tty life and woud kill himself(not literally) to make other peoples pain stop. he may be a little chubby and he may not think that he look good but hes a really nice guy even tho people see him as a annoying piece of crap,well thats a complete f#%king lie.
sebastian:hey gu-omg what happened to willson!
jeff:he got pushed down by some kids
sebastian:be right back...
jeff:he got pushed down by some kids
sebastian:be right back...
by pizzaLORD June 3, 2020
Get the sebastianmug. Sebastian is pretty nice
by Mort17 November 23, 2021
Get the Sebastianmug.