Top Definition
A nickname for someone who is insanely sexy. It is a nickname rarely given, only to those who are worthy. People with this nickname is hard to find, only about 1:1,000,000,000. Known to the gods as "The Sexy of All Sexy."

Nickname only given to Males.
No example has been found yet, no one has actually seen or heard of Ja Nay Nay, is he real?
by Twix Moment January 25, 2010
another name for skank. girl who likes to take advantage of men sleeping on their backs by peeing on their faces and videotaping for blackmail.
her favorite prey include marines and dinosaurs.
I brought home another janaynay last night, and woke up wet, cold and broke.
by tinpanalley March 09, 2010
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