A person who, like the metaphor of the ostrich sticking it's head in the sand when in a difficult situation, promptly shoves their head up their ass during an argument that they're losing and refuses to budge from their position. Most often people with closed minds and no interest in compromising.
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.
"Base we've got some square groupers floating outside of Miami harbor."