(noun) condition of scrotum after swimming in cold water, walnut bag, also at point of maximum sexual excitement, also before decisive moment (battle, competition, exams, then adrenalin-induced)
after his swim down the river, Paul's walnutsack gave his trunks the spiked look.
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.