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1.
The name for a girl or guy who has sworn off sex for the good of themselves and not for religious or environmental purposes.

Can also be:

-Sure-Pure
-Puree
-Ago-pure
-Ego-pure
Guy 1 - "So, I was thinking of asking my girlfriend to go to bed with me"

Guy 2 - "No chance, dude. Your girlfriend's a Surepure."
by GwedhielJ April 02, 2010