A pizza delivery boy arrived at the house of Mr.Johnson. Mr. Johnson asked: "What is the usual tip?"

外送員把披薩送到江森先生家，江森先生問：「一般人給多少小費？」

"This is my first trip," replied the youth, "if I get one dollar, it'll be great."

年輕人回答：「我第一次送披薩。如果能拿到一元小費就太棒了。」

"Here's five dollars."

「給你五元。」

"Thanks," replied the youth, "I'll put this in my school fund."

年輕人說：「謝謝您，我會存起來當教育基金。」

"What are you studying in school?" asked Mr. Johnson.

江森先生問：「你主修什麼？」

The boy smiled and said: "Applied psychology."

年輕人笑著回答：「應用心理學。」