Little brother

A mother asked her small son what he would like for his birthday.
"I'd like a little brother," the boy said.
"Oh my, that's such a big wish," said the mother.
"Why do you want a little brother?"
"Well," said the boy,
"I'd like a little brother," the boy said.
"Oh my, that's such a big wish," said the mother.
"Why do you want a little brother?"
"Well," said the boy,
Spoiler: