A bumbling lump, knuckle dragger, buffoon, or chucklehead, meant as a combination of garbage, bozo and gorilla, a concise way of calling somebody a big dumbass.
Garboza: Ahh, sorry boss, I busted another chair...
Boss: You god damn garboza you, that's the third time, should I get you a crane instead? Lay off the fried chicken!
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.