Adjective. Something which goes beyond simply sexy, and in fact represents, defines, and/or embodies all of the sexiness on the planet; the absolutely sexiest person, object, or idea.
"Pamela's skintight zipper-front dress is the sexy, and showcases her sweet T and A."
"JVP is the sexy."
Something that is exceedingly sexy. Usually used to describe people (particularly hot librarians). Originally from the webtoon "Bonus Stage."
"H-h-h-hey, you! You're the sexy."