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1.
The meaning "shape on" is a turm used by casual drug users to get a gathering of like minded people together to part take in session. Theses sessions can last from a few hours to a few days.
"Hey Sarah what you up to? Fancy coming for a shape on??"

"lets go get are shape on"

"Sarah you got hell of a shape on sort it out"

"Im shaped right up"
by Chixster July 22, 2010
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