A headcrab funny is defined by any time in a half life game valve decided to be funny and put a headcrab in an unfortunate spot where the player might not see it until it's too late
Dario casali: man, there's not enough headcrab in this chapter, time to put in another headcrab funny
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.