Regional, mid-south US.  From the Jerry Lee Lewis song "Drinkin' Wine Spo-Dee-O-Dee".  Not quite an insult.  The term is applied to one who is respected, yet inferior, or more often simply in a temporary state of inferiority, such as a friend who is being a stupid drunk.
as spoken to a friend who is hitting on fat girls and about to fall down some stairs: "whoa! careful there spo-dee!"
as a polite but firm and assertive warning to a transgressive stranger: "best keep off of my girl there spo-dee"
as a polite but firm and assertive warning to a transgressive stranger: "best keep off of my girl there spo-dee"
by XBJ-9000 December 13, 2003
Get the spo-deemug.