1. A combination of "sick" and "ill" used in the colloquial fashion to denote awesomeness, smoothness or excellence etc.
2. A standard that redefines perfection
Did you check out that dance routine on Youtube? It's the sillkest.
That hamburger was sillk!
Seaman/Cum/spunk/daddy batter
As i wanked like a fucker arks of liquid silk spilt all over my bedroom floor
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