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A bro or someone of the sort who tends to utilize large amounts of gel in their hairstyle. This gel tends to cause the hair to have a 'frosty glint' to it, hence the name 'Frosty the Broman"
Nick: Hey dude, did you see Mark today? He was workin' that hair gel.
Ian: Yeah, man. What a Frosty the Broman.
by CompSci2 April 05, 2011