When a girl thinks she may be pregnant, and takes a common drugstore pregnancy test to find out that she is not, in fact, pregnant. "Pink" is derived from the colours of the indicator stripes on the test, and "scare" is obvious as this is scary shit.
"Tanya slept with that guy last week and today she had a pink scare."
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.