The release of such an ungodly fart that its potency and duration make those around the farter believe that the farter did not merely fart, but indeed shit his pants. Usually either an insult at the farter's discourtesy in not leaving the room, or a proud boast to indicate the true power of methane.
Them: pffft
Me: <Sniff, sniff>...what the fuck, who shit themselves?
Fairly ambiguous and is often open to debate on it's correct application.
Historically it has been used to politely ask someone at, say, a formal dinner, if they have farted or indeed, have actually shat their smalls. The use of "have I" helping to ease the embarrasement of the situation.
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.