A joint that is comprised of the roaches of other joints. Makes for superb smokage. The roach that comes from the "roach joint" itself is a "grandfather roach", a bit of weed that has somehow survived two joints. Hence, a "grandfather joint" is in turn a joint rolled, comprised of grandfather roaches, and just a delight to smoke with your buddies.
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.