1 definition by Guys2Gays.

This is eyeliner worn by men, it could be any eyeliner.
This could mean the man is gay.
Guyliner can even be tattooed on the face(a woman can do this too).
Girl1: Do you see that guy? it looks like hes wearing makeup!
Girl2: Omg! It must be guyliner!
by Guys2Gays. June 16, 2011
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