When Peter is 17, he is as tall as his father. So he begins to borrow his father's clothes when he wants to go out with his friends in the evening. Father doesn't like this. And he always gets very angry when he finds his son wearing any of his things.

"And that shirt is mine, too."

One evening when Peter is about to go out, his father stops him in the living room. He looks at Peter's clothes very carefully. Then he says angrily, "Isn't that one of my ties, Peter?"

"Yes, Father, it is," answers Peter.

"And you're wearing my belt!"

"Yes, I am, father," answers Peter, "You don't want to your trousers to fall down, do you?"

"Yes, that's your, too." answers Peter.