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1.
710
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
 
2.
710
Meaning Oil. The upside down version of it.
Blondes usually go to a body shop asking, " How do I fix my 710??"
by Nimeskern June 21, 2007
 
3.
710
The US goverenment's secret area code.
There is no example
by top secret March 28, 2004
 
4.
710
handjob
left,right,forword,backward,ooh yeh!
by Anonymous July 10, 2003