"richard: "how's your shoulder boy?" darrell: "after those 27 birthday hand you all hit me yesterday it's still a little sore"  richard: "happy birthday man""
the practice of hitting the birthday celebrant the same number of times as their age
""richard: "how's your shoulder boy?" darrell: "after those 27 birthday hand you all hit me yesterday it's still a little sore"  richard: "happy birthday man""" What is the definition of "birthday hand"?