Successful Studying Tip
After taking the pizza, Harry asked: "What is the usual tip"?
"Well", replied the delivery guy, "this is my first trip here, but the other guys say if I get a quarter out of you, I'll be doing great".
"Is that so" snorted Harry? "Well, just to show them how wrong they are, here's five dollars".
"Thanks", replied the delivery guy, "I'll put this towards my college fund".
"What are you studying in college" asked Harry?
The delivery guy smiled and said: "Psychology".