To be positive that the gifts or presents you have bought for someone he or she will enjoy; to be optimistic that the purchases you will make will be well-worth the money.
My mother was so shoptimistic about the presents she had bought for my sister and I this Christmas that she didn't even bother keeping the receipts.
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.