A person and or an organization which finds significance and meaning in trivial things or matters of no importance.
A cultural example comes from the Cohen Brothers 1998 film, The Big Lebowski. The story's protagonist, Jeff Lebowski known as "The Dude", endures hardship and misadventure while pursuing the recovery of his stolen rug because, "It really tied the room together." Lebowki is an unrepentant denihilst.
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."
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.