Why do people laugh when they are being tickled?
People laugh while being tickled because of a nervous reaction. They know it will tickle and therefore laugh, which is why many people laugh even before they get tickled. The weird part about all of this is: The nerves that pick up on this tickling sensation are pain nerves, the same nerves that pick up painful sensations. Some people that are in a lot of pain get surgery to sever the ends of the pain nerves. This makes it so that they don’t suffer from constant pain. This also makes them less ticklish!