adjective describing anything that is ridiculously ballin and/or extremely cool
"sick " can be exchanged with various other words such as:
gay as nuts - something which is incredibly gay
dank as nuts - marijuana which smells ultra smelly etc..
Z2 - Yo fool, that party was sick as nuts last night
Teradaktyl - Damn straightson, them ladies was fine as nuts
(exchange a high-five)