Some animals cover an area with their scent to warn any other animals that they will not tolerate any competition in the area. Typically by pissing and shitting on it.
The animal marking the territory is usually already feared. If it isn't, it may have to enforce the marking of territory by initiating conflict with any animals that violate his territory.
This is usually an expression to refer to warning off potential competition.
Jenny: My husband has all these attractive female co-workers? What should I do?
Friend: Get to marking your territory. Put your best photo on his office desk. Have him leave with a ring on his finger.
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.