TELLING LIES

A grandmother was looking after her two little grandchildren, a 7-year-old girl, and a 5-year-old boy. Both of them had been really naughty. But as the time approached for their mother to pick them up, the little girl said to her grandmother, "Are you going to tell Mummy?"

The grandmother replied, "No, I'm not. But if she asks me, I can't tell a lie."

The little boy looked up to her and said, "Why not? I'm only five, and I can lie great."