The act of not exactly sitting, but not exactly standing over a LONGDROP, but more a case of just bending the knees with your bum a few inches above the seat when wanting to defecate
To levitate means to smoke pot. It refers to achieving a meditative mindstate, one that yoga gurus (presumably) achieve, whilst sitting in a lotus pose. When in this mindstate, it might feel as you're floating mid-air, ergo levitating.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the USCoast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."