While visiting a house of a friend whom had recently acquired a very cute little puppy, I lost all manly control and started playing with the dog. During the tussle, the puppy vehemently licked my face. Obviously consumed with jealousy, my girlfriend quipped that I should not let the dog lick my face lest I become infected with hydatids and my face explodes. Having no idea what hydatids were and being interested in the face-explosion aspect of it, I looked into it further.
