Is God Deaf?

A little boy was kneeling beside his bed with his mother and grandmother and softly saying his prayers, “Dear God, please bless Mummy and Daddy and all the family and please give me a good night’s sleep.”
Suddenly he looked up and shouted, “And don’t forget to give me a bicycle for my birthday!!”
“There is no need to shout like that,” said his mother. “God isn’t deaf.”
“No,” said the little boy, “but Grandma is.”