Little Oliver is outside in the garden, playing with his friends.
Suddenly he comes running into the house and asks: “Grandma, what is it called when two people sleep in the same room and one is on top of the other?”
His grandma is surprised to hear such a forthright question from a six-year-old but decides to answer as honestly as she can. “Well,” she says hesitantly, “it’s called sexual intercourse.”
“Oh, okay,” says Oliver and runs outside to carry on playing with his friends.
A few minutes later, he comes back in and says angrily: “Grandma, it isn’t called sexual intercourse. It’s called bunk beds. And Kevin’s mom would like a word with you!”