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Slang for smoking hash oil due to the number resembling the word 'oil' upside-down.
"710 is the new 420."

--High Times Magazine
by MeemawDabs July 13, 2013
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Address of the Grateful Dead House. 710 Asbury Street, San Francisco, CA
Let's go get photos in front of the 710 house.
by EliotGT March 16, 2017
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