doing something ass-backwards (literally, in it's original form)
This term sprang like a phoenix rising from the ashes from an incident that happened to a friend of mine. We'll call him Dude. Dude had the flu, and everything that comes with it, and was sprinting toward the bathroom for the millionth time with diarrhea when he realized he had his underwear on backwards. With no time to spare he proceeded to "do his business" through the fly opening or, to poop of out of the peehole.
As the phrase rolls off of the toungue so easily, it came to have many different applications.
*Parts of this story may have been dramatized for effect
"did I just poop out of the peehole?" (driver asking passenger in a car if they had driven the wrong way out of a parking lot.)
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.