Noun. A particularly flighty and flaky space cadet in a long and lonely orbit, free of substance and merit. A common moonfart trait is delivering intensely bitchy comments in a soothing, vacant tone; also deflecting all blame and responsibility in the same zombie-guru monotone.
Guy1: Man, if she put as much effort into her work as she does trying to lead the office in meditation, she might keep her job.
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."