Giving someone a purple nurple can be very fun but it may hurt the other person. Before giving a purple nurple make sure your hands are clean and that the person you are doing it to is fine with it. If your just playing a joke then go ahead and do it.
A Purple Nurple is when you twist a persons nipple and it hurts them a little bit
How do give a purple nurple
take 2 of your fingers
grab the persons nipple
twist it - not to hard it hurts
Be careful purple nurples can twist a nipple right off someone and they are extremely painful