meaning: 'really good'
a mixture between 'sickness' and 'sick as' = sicknas
JJB: Whoa! Look at that school chick! Sicknas!
by ApexB October 03, 2005
abbreviation of sickener + used to replace the word 'gutted' + when describing a embarrasing/funny/negative event
1. last nite joe pulled a forty-five yr old beast with dentures-sickna

2. i just lost £1000 at the casino-sickna
by alexina January 11, 2006

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