Incurable Disease (PSS)in which people lose their senses and start killing boats and other things. Only one known case recorded in the Continental US. Side effects may include wanting to cause "A lotta Damage" and stab things with knifes. Scientists believe that it may be caused by inhaling rubber sealant.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.