Used when refering to a member of the opposite sex to you, to how your dislike in their physical appearance.

Or

To show your dislike in anything in which may be disgusting / ugly
Person 1 - " Get on her man shes sexy"

Person 2 - " ERRR shes PURE GUN "

Or

When spotting something ugly i.e Ugly Girl walking past...
"PURRRREEEEE"
by Sandmaninavauxhall January 11, 2010
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