A word invented from the randomly-picked words "shoe," "band," and "door" by a group of high-schoolers as a semi-euphemism for sexual intercourse.

Can also refer to a certain group of words, i.e. the "Shubandor Words" (hatterapple, dunano, mellashalés, hattershalés)

Other usages:

-"shubandoré" in place of "sexy"
-another word for nonsense, idiocy, depravity, or a crazy orgy.