The idiots who define people's names on Urban Dictionary. Despite the fact that it clearly states you shouldn't define people's names, the submissions page is filled with many from these people. Usually the same people who can "hack" Wikipedia by hitting the edit button. Usually high school aged children in elementary school.
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.
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.