Comes from the word Ubergay. A Jubergay is a Jewish Homosexual (e.g. Dave Blake) who buys all their 'fabulous clothes' on clearance, and still looks 'fab'.
Jubert is the type of Jubert that cannot cook beans. Jubert found a sudden urge to always wear her crocs so you can smell her patas from a mile away. Jubert is always in a silly goofy mood... just don't touch Jubert's hot chips or else.