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Similar to a tea party (see definition 4.) however once at the stage of being stoned/high, members at the devonshire tea will inhale NOs (nitrous oxide, often inhaled via a ballon). This causes hallucination and is massively enjoyable.

The name derives from NOs canisters being used to make whipped cream, and marijuana cones, hence the cream and scones (cones)
Taylor: "Hey man want to have a tea party this weekend?"
Bob: "Nah, let's have a devonshire tea."
Taylor: "Good idea, I'll get the cream"
Bob: "Let me handle the scones"
by Teamaster June 08, 2009
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