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1.
The slang term commonly used to express gayness or ugliness to another person, originating from the name of an online myspace user who was named flaviu posting his suckish raps on myspace music and being banned for life.
"Dude, why'd you screw my mom and not pay her? You're such a flaviu."
by Pwnage117 October 21, 2008
 
2.
The most bad-ass person in the whole universe
OMG look at that guy.
Yea, he is such a flavius.
by juday August 05, 2014