1. (n.) The face one makes when they exclaim, "Boom!".
2. (interj.) Exactly like exclaiming "Boom!" This works because it conjures the mental image of the face you would have made had you just said, "Boom!" (Note: typically is performed without actually making a boomface.)
A pet name used to address one, to whom you have much affection for. Couples who use this term are often immulated by jealous or rival couples, in attempts to give themselves false hope of becomming the original booface-using duo.
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.