Seibel 

The definition of badassness. One who acomplishes great feats of awesomeness. A complete and utter pimp who gets whatever he wants.

John- dude did you see that guy kill that tiger with his bare hands and then bang that hot chick
Bob- yeah that dude's such a seibel

Seibel by Badass69 January 16, 2009

Seibel 

Used to describe someone of low mental and emotional maturity. Seibels have no greater joy in life than making sloppy wet fart noises with their mouths. You know you're around a Seibel when you hear heavy breathing and nobody is doing any exercise in the vicinity. A Seibel is often identified by their collection of cats and sloppy outer appearance.

"Why is he always making immature jokes, he's such a Seibel"

"The world could do without all these Seibels running around."

"Wow he died? He was such a Seibel anyway, good riddance."

Seibel by AsianSlayer January 14, 2021

seibel 

very motovative yet incompitent, retarded person that manages items.

what a dumb seibel
your such a seibel

seibel by sadizzle January 29, 2008

Seibel 

Retard who try to manipulate others to suck a wiener but only successfull when he meet another similar type of person like, ugly fat guy from midwest.

One guy: "look at that guy, he looks like a complete idiot"
Other Guy: "yeah, he is so Seibel"

Seibel by Tata51 October 18, 2010

Droppin' a Seibel 

To fart with either extreme stench (room-clearing) or a fart of epic proportions

Dude i ate too much at Taco Bell earlier - I feel like Droppin' a Seibel...

Droppin' a Seibel by Blonde Haired Midget January 13, 2011

Jacob Seibel

Stupid rat boy that sits in the corner of the room threatening to shoot up the school but is too pussy to go through with it.
P.S. also threatens suicide

Some days I'm Jacob Seibel but other day I am epicsauce

Jacob Seibel by GooeyOoey June 23, 2019

Sibelius 

1) The most prominent (And just about only) Finnish composer. Lived from the late nineteenth century well into the middle of the twentieth. Famous for his seven symphonies, particularly the second and the fifth. Also produced such well known classical pieces as 'Finlandia', Finland's unofficial anthem, Valse Triste', his Violin Concerto, and his choral symphony 'Kullervo'. Although he lived up to 1952, he did not compose any new pieces after approximately 1920.

2) A music notation program known among the musical community for being annoyingly overpriced and very useful at the same time.

Sibelius is the only composer I know who can write music that reduces an entire audience to tears with his music (well, rappers can, but in a different way)

Sibelius by Lemminkainen September 6, 2010