At a Post-Office

A German student, who did not know English very well, came to a post office in London. In one hand he had a letter in an envelope and in the other hand he held a stamp. He went up to the girl who worked there and gave her the stamp and the envelope.

“No, no,” she said.

“You must stick the stamp on yourself.”

“Why must I stick the stamp on myself?” asked the student.

“I want to send a letter, but not myself!”