Grandma wouldn’t lie

Little Johnny was at his first day of shool. The teacher advised the class to start the day with the pledge of allegiance, and instructed them to put their right hands over their hearts and repeat after him.
He looked around the room as he started the recitation, “I pledge allegiance to the flag…”
When his eyes fell on Little Johnny, he noticed his hand over the right cheek of his buttocks.
“Little Johnny, I will not continue till you put your hand over your heart.”
Little Johnny replied, “It is over my heart.”
After several attempts to get Little Johnny to put his hand over his heart, the teacher asked,
“Why do you think that is your heart?”
“Because, every time my Grandma comes to visit, she picks me up, pats me here, and says, ‘ Bless your little heart,’ and my Grandma wouldn’t lie.”