When a person hides between the bed sheets and covers of another's bed and waits for them to lay down on top of them. Once they lay down, the person from below immediately grabs them like a monster that hunts in the sand
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."