A popular dance in the Bay Area, created by rapper Mace Dre. The dance involves moving your arms in a trance-like motion, very similar to "feelin' yourself".
Baydestrian 1: Yo, you see that cutti gettindown with the swabbage patch?
n. A foolish or stupid person. A buffoon.
Though they may not be a proper spabbage, and indeed a normal person, any action or phrase which a person may perform, or utter (respectively) which is idiotic in some form, may cause others in the vicinity to call them a "spabbage".