Johnny paid his way through college by being a waiter in a restaurant.
“What’s the usual tip?” asked a customer.
“Well, “said Johnny, “this is my first day, but the other guys said that, if I got five dollars out of you, I’d be doing great. “
“Is that so?” growled the customer. “In that case, here’s twenty dollars. “
“Thanks. I’ll put it in my college fund, “Johnny said.
“By the way, what are you studying?” asked the customer.
“Applied psychology. “
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