Syd Vicious 

Any girl with the name of Sydney who sometimes goes by the name of Syd who also goes to punk/rock concerts, likes ripped jeans and choppy haircuts, and sometimes has manly calf muscles. Derives from the late 70's punk icon Sid Vicious .

Dude, that's not just a Sydney... that's a Syd Vicious.

Syd Vicious by Electro Em June 6, 2011

SydVicious 

A very vicious girl by the name of Sydney. Usually given this name when playing football with much larger people than she. Refers to violence often.

That was very vicious of you Syd.
Like SydVicious.

SydVicious by SsssToTheRrrr June 24, 2009