1 definition by Mandy Mill
It is short for bisexual. In the deffinition for "Natalie" it says she is a offten a bisexual, and once again bisexs is short for bisexual. It is also a nick-name for for a "Natalie" so next time you see a girl named "Natalie" be sure to call her bisexs!
by Mandy Mill February 20, 2010