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1.
Used to describe someone who is damn high on dat ganja. Pronounced "dun-skees".
"Dang mang, you see Matt??! He was doneskies!"
by John McGillicuddy April 14, 2008
 
2.
When your smokin weed and the weed gets so beat its like your smoking the shit out of a camels ass.
"yo this bowl is donesky"
by Jacque Strapp May 12, 2005