Grandmas don't know everything!

Tony  was 9 years old and was staying with his grandma for a few days. He'd  been playing outside with the other kids, when  he came into the house and asked her, 'Grandma, what's that called  when two  people sleep in the same bedroom and one is on top of the other?' 
She  was a little taken aback, but she decided to tell him the truth.   'Well,  dear, it's called sexual  intercourse.’ Little Tony said, 'OK,' and went back outside  to play with the other  kids.  A  few minutes later he came back in and said  angrily, 'Grandma, it isn't called sexual  intercourse. It's called Bunk Beds. And Jimmy's  mum wants to talk to  you.'