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".
A word of multiple meanings dependant upon circumstance;
1) Term of endearment made to one’s best female friend post extreme in-expensive chardonnay/cocktail/vodka consumption
2) Adjective to connote wide-reaching displeasure at another female for looking at/standing next to/flirting with/touching, etc, a gentleman belong to someone else (usually yourself or drinking companion)
1) “I bloomin’ love you, you gorgeous Slagbag… pass us the ciggies…”
2) “That there Slagbag better stop pawing at your Dave, or else I’m going to have to beat her with my silletto…”
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.