When I was younger, maybe 10 or 11 years old, my dad gave me some mustard on a piece of pork at a Chinese Restaurant.  It was clear your sinuses hot mustard and I had a difficult time maintaining my composure.  However, when the meal was over, I still had not finished my glass of water and although I did not go back for more mustard that day, I was mysteriously drawn to spicy food from that point on.  My curiosity had been spurned, and my desire to eat spicy hot foods was born.