"The Advanced Baby" joke

A baby was born that was so advanced that he could talk. He looked around the delivery room and saw the doctor.
"Are you my doctor?" he asked.
"Yes, I am."
The baby said, "Thank you for taking such good care of me during birth."
He looked at his mother and asked, "Are you my mother?"
"Yes, I am," she said.
"Thank you for taking such good care of me before I was born," he said.
He then looked at his father and asked, "Are you my father?"
"Yes, I am," his father answered.
The baby motioned him to come closer, then poked him on the forehead with his index finger 5 times, saying,
"I want you to know that
THAT HURTS!"