Top definition
Acronym for Just Be Yourself, coined by an acronym extraordinaire in Crown Heights/Eastchester, NY
Mehran, don't get nervous about punderdome on Tuesday, JBY!
by jby123 October 29, 2014
Happy St. Patties Day!
Acronym 4 Just Be Yourself. - The best way NOT to pick up hotties.
Dexter: How do i find a female humanthropid that i can make sex with?
AFC: JBY man.
by brendan May 13, 2004
Happy St. Patties Day!
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