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1.
Penis with a large, swollen, purple head due to being constrained in a bondage device. The head (glans penis) turns purple and swells from lack of circulation. While it doesn't flatten like a cobra's hood, the head does swell so it becomes larger similar to a cobra's hood.
He put the cock ring on too tight and now he's got a purple cobra.
by Bucko McCane April 29, 2006
86 28
 
2.
a group of friends and brothers, that optimize the epitome of being cool, pull mad bitches (mad in the sense of hot and a lot), are just all-around chillers/blazers, and have their home lair always labeled "The Pit"
The gang of purple cobras currently attending USC
by purplecobra4life November 18, 2009
10 13
 
3.
One who thinks (s)he is cool but in reality is not; ranks above poons and unterpoons
George W. Bush is a purple cobra
by Kingmaker May 07, 2006
14 51