The out-of-nowhere tangent subject that comes up in the middle of a conversation between a group of people who smoke weed a lot.
Stoner 1: "So, last night was fun. I got really drunk."

Stoner 2: "Yeah. Do you ever think about what it would be like to be a duck?"

Stoner 1: "Dude. That was a total stoner tangent."
by BluntToMyLips March 31, 2009
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A long winded story telling and/or rant while under the influence of some mind altering substance. Usually difficult to comprehend unless you are stoned, or happen to know said ranter.
Jessica had a stoner tangent when she was so high she couldn't remember when she started talking.
by betterThanGreg March 22, 2009
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