The phrase (also known as weed etiquette) is used after a friend or acquaintance smokes you out, meaning thanks for the dank herb.
Stoner 1: "Hey dude, wanna smoke?"
Stoner 2: "Of course" Moments later...
Stoner 2: "Dank you"
by JacobZD January 2, 2010
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thanking someone after receiving weed as a gift or a present.
Bill: hey Ted, try this rad bud.
Ted: dank you very much, my most excellent friend Bill.
Bill: rad
Ted: rad
by toemas April 24, 2015
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