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1 definition by Sammy Cadels

When you are out in the cold doing exercise ect. for so long that the tip of your penis turns white instead of pink. Therefore you now have a White Helmet.
Jimmy: Dude, fuck track practice in the morning, it's so cold I got a white helmet like 5 minuets into the jog.

Mike: Same I need some warm water.
by Sammy Cadels October 08, 2011