1. Of the highest quality; usually involving weed or paraphernalia, i.e. blunts, bleezies, bongs, pipes, vapes, herb, etc.
2. Of the highest level; usually describing as to how high one is.
3. P.o.s. used as an adjective, to describe something/someone, as being of the best quality; the most respected.
1. "Man, this shit is of the upmost dankity dank."
"I know nigga."

2. "Shit son I'm at the upmost dankity dank."
"Word up nigga."

3. "Yo man yo car is of the upmost dankity dank."
"Shit! I only roll in ma Bentleys G."
by mkyfckndbtchs January 27, 2010
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