Insania is a latin word meaning many things, but mainly it means 'insanity', obviously. This is a word from the ancient language Latin, and was not invented by Peter André as some people here suggest.
Musical example disproving the Peter André theory would be the song "Twilight of the Gods" from 1987 by the German power metalband Helloween, where the word Insania is used in the lyrics.
A medical example would be Insania Paranoides, which means mainly to be paranoid of stalkers, or to have become insane from that paranoia.
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.