Joke

A mother was looking after her five-year-old son when he fell off a playground slide and hit his head.
Worried that he might have a concussion , she checked him all night. Every hour , she'd gently shake him and ask , "What is your name?"
Soon , the boy began moaning in protest each time she entered the room.
When she went in at 5 a.m. , she found something white on his forehead.
It read:"My name is Bobby,Bobby,Bobby......"