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1.
1) A mischevious genious or a militant womanizer.

2) A Serpent like man, one who is wise and crafty.
A Sepera is someone who is a Rebel against the systems of the world, although they seem to Master it and use the system to their personal individual advantage. Sepera does not know how to make the world better, but he knows how to get the best out of it.
by James McGill July 12, 2006
 
2.
Sepera is a well trained, highly violent, extremely dangerous urban ninja with very good knife fighting skills. Has a nihilistic, radical outlook on life, sometimes suffers from Antisocial Personality Disorder. Sepera's career often starts with an internship at an IT company, however in most cases after a few years of work Sepera gets a permanent job as a courier. Typically dresses in grey&black colors, very often can be spotted in a grey hoodie, black cap, black parka and Adidas ZX sneakers, carrying a messenger bag. Despite his poor choice of clothing somehow manages to look stylish. Has a perverted music taste, fancies indie death metal, grindcore, hatecore, bands and chechen folk singers. Spends his spare time peacefully rebelling against the System, making attempts to troll the online community and taking pictures of himself.
1) - "Damn, saw Sepera today, was walking write at me on a narrow boulevard" - "YOU DIDN'T GET STABBED? You're one lucky son of a bitch!"

2) - "Hey guys, check out my new Sepera-style outfit!" - "Oh FUCK OFF for christ's sake! Stop fucking Sepera's corpse! sage!"

3) - "Sup, Untermenschen. Got high on acid while listening to Burzum yesterday evening. Then I fucked a whore I met on the subway, lit a cig and started reading Nietzsche" - "How's it going, Sepera?"
by cloden April 06, 2012