Worried that his son was spending too much money on dates, Little Johnny's Father asked how much his last date had cost.

Little Johnny calculated a minute then replied, "Oh, about $15 or so I think."

"Well," said his Father, "I'm proud of you for finally coming up with an inexpensive evening."

"To be honest Dad," Little Johnny went on, "we'd have done more, but that was all the money she had."