Use your own handkerchief

One morning a London boy was sitting in the bus on his way to school. He was sniffing all the time and making noises with his mose that the other people in the bus began to shake their heads.

At last an old man who was sitting nest to him said, "Little boy, have you got a handkerchief?"

"Yes, I've got a clean handkerchief in my pocket," said boy. "But I cann't let you have it. Mother says it's not polite to ask anybody for a handkerchief. You must use your own."