(noun)The helmet-like hairdo caused by the use of an excessive amount of (typically men's) hair gel.
Check out Tom's gelmet - he's definitely not getting any play tonight!
by conor dowling August 16, 2006
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A Phenomenon that occurs when an excess of hair product coagulates to form a protective covering for one's head.
Were you just in a pool, or is that a gelmet?
by thecougar83 March 23, 2011
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Derived from the term "German Helmet" referring to the shape of ones bell end
" aw damn, my herman gelmet is covered in spangle"
by Geoff Bennett October 23, 2005
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