pronounced sto/nin/ven/tion
An invention/concoction of some kind that was thought of, developed, and assembled all while being under the influence of marijuana
Dude #1: yo...is that a bong made from a 5 gallon water jug?

Dude #2: yea man. thats a stoninvention that me and a few fellas came up with
by theOParmy May 30, 2010

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