1 definition by GuyWithSling

A person who identifies as being the same sex, as the sexual organs with which they were born. An easy way to remember this would be to associate "C-I-S" as an acronym for "Comfortable In Skin".

Where as the opposite of this would be someone who is transexual, who feel they were born in the wrong body, or they are "NOT Comfortable In Their Current Skin."
I might be a gay man, who has sex with men; but I have no desire to be, or to dress like, or act like a woman because I am CIS "Comfortable In my Skin." I am more comfortable being a man.
by GuyWithSling July 28, 2019
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