Top Definition
over-the-top disgusting,
Did you see that sicknast girl just walk by?
#sick #nasty #sicknasty #disgusting #gross
by Critty Gee August 30, 2010
1. extremely disgusting,
2. a shortened version of sick and nasty
1. That sandwich is sick nast. Its been in your fridge for 5 months!
2. Jared told a porn joke, sick nast!! He's such a perv!
#gross #funny #nasty #sick #weird
by mibackibenzibie February 08, 2008
an adjective to describe something awesome
Geoff O'Callaghan is the sick nast
by Geoff February 22, 2004
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