Sick nasty is used to describe a situation, person, or thing so disgusting and gross that it deserves to be called both sick and nasty. Sick nasty can be used in almost all context, I mean what isn't sick nasty?
(orgin the celtic swim '06-07 team)
(orgin the celtic swim '06-07 team)
Wow that shirt is really sick nasty. I just wanted to gouge my eyes out today when I saw Brett because he is so sick nasty. etc
by Celtic Swim '06-07 December 13, 2008

When something is super awesome/cool/tight/sexy... etc
since two negatives makes a positive (sick- bad, nasty- bad= good)
since two negatives makes a positive (sick- bad, nasty- bad= good)
That board is sick-nasty.
Everything that dosn't involve __________, is sick-nasty.
Your mom is sick nasty.
Everything that dosn't involve __________, is sick-nasty.
Your mom is sick nasty.
by reveingiallo March 7, 2008

by Alex =) June 18, 2006

by klepto420 November 25, 2007

Contrary to its wording. Sick-Nasty is a good thing. It means that something is so cool that it is sick but at the same time nasty because you want some of it.
Kevins girlfriend is sick because she acts just like a guy, but then nasty because we want to f*#$k her, therefore making her Sick-Nasty.
by Pulchunk September 17, 2008

Although this phrase sounds derogatory, it is in fact a very, very positive thing. It is used the same way as "cool," or "awesome" in modern language.
by Ugly Dude Guy May 24, 2008

by Jovomo March 6, 2010
