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1. To be extremely high on marijuana.

2. To have so much swag and guap that you feel you are not of this world.
That nigga's rollin in green, he's spacely.
by BasedWizard July 21, 2011
An adjective used by rapper Wiz Khalifa to: First, describe his tremendous swag that is out of this world. Second, describe the fact that he is a super star.And third, describe the high he gets after smoking high quality marijuana.
"Spacely"- Wiz Khalifa ft. Rocky Fontaine http://www.youtube.com/watch?v=2F3La2r63bw
by Mr. Penn State January 08, 2009