I remember how fun St. Patrick's Day was as a kid...getting to pinch your friends for not wearing green...or how about wearing the tiniest, most obscure green ever...so when they pinched me, I had the honor of pointing out their mistake..and pinching them 5 times back!!
Ever wonder why we get pinched? Some think it was started in the 1700's by colonist in Boston. They thought if you wore green, it made you invisible to the Leprechauns, which was good because they would pinch anyone they could see. So the pinching is to warn and remind you about the Leprechauns. Pinching those not wearing green on St. Patrick's Day is an American tradition, having really nothing to do with Ireland or St. Patrick The writer of this said that he had lived in Ireland and the truth is, Irish people think Americans are crazy. St. Patrick's Day is not even remotely celebrated over there as heavily as it is in the US. ( I got this from answers.com, in case you were wondering)
However it started or why makes no difference to me....I'm wearing my green and dreaming of a day when I can travel to Ireland to see the lovely country myself. You keep Dreamin' too