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1.
1. Eyeliner for guys.
Many of todays flamboyant rockstars, but most notably Brandon Flowers of the Killers, wear guyliner.
by muthecow November 12, 2005
 
2.
Eyeliner for guys, no longer only for homosexuals, which is becoming surprisingly popular in today's society.
Anna: Kristina wears too much black eyeliner.
But Joey, being all emo and stuff, wears guyliner.
Like Pete Wentz.

Jen: Is Joey gay?!

Anna: NO. He's just that emo. Duh.
by Mickeyy February 15, 2006
 
3.
Eye liner, normally black, worn by guys. Hence, guy liner.
Emo kids wear guy liner.
by shelovesyou November 06, 2006
 
4.
Eyeliner applied on a man. Once formerly the territory of only homosexuals,punk rockers and showmen, well-applied guyliner is slowly but surely becoming more socially acceptable for heterosexual men who ascribe to metrosexualism, glamour, and general fabulousness.
Proper Usages of Guyliner:
Brandon Flowers of the Killers
Sam Endicott of the Bravery

Improper Usages of Guyliner:
Joel and Benji Madden of Good Charlotte
Billy Joe Armstrong of Green Day
by L Cali November 15, 2005
 
5.
Eyeliner for guys. 'Nuff said.

Used by many people, including, but not limited to Brandon Flowers of The Killers and (most likely) Billie Jo Armstrong of Green Day (I think he uses mascara as well).
Bobby wears guyliner
by Amy Renée August 13, 2009
 
6.
eyeliner that guys use
usually put on without much care, unlike on women
The members of Good Charlotte wear guyliner
by chica66kablam January 04, 2008
 
7.
only real men wear eyeliner.

emo kids, too.
for example, billie joe armstrong and tre cool of the band green day wear guyliner. NOT mike dirnt.
by mrs armstrong December 18, 2005