A high school student spent most of his afternoon in the basement mixing
chemicals. One day his father went down to find his son surrounded by racks
of test tubes and pounding something into the wall.
"Danny, don't put nails in the wall," his father admonished.
"It's not a nail, Dad," the young man explained. "It's a worm. I found a
formula that turns things as hard as a rock."
"Tell you what, son," the man said with sudden interest. " You give me the
special formula and I'll buy you a car."
The next day when Danny got home from school, he saw two brand-new cars in
the driveway. "Dad, what are these?" he asked.
"Oh, they are for you son," his dad said, smiling. "The Toyota's from me.
The Mercedes is from you mother!!"
