I thought the one posted in this thread by DiRNiS was pretty good. http://atheistforums.org/thread-4316.html
"The scripture teacher told the class that all people were descended from Adam and Eve," he said.
"'My daughter rightly pointed out, as I had been teaching her about DNA and science, that 'wouldn't they all be inbred'?
"But the teacher replied that DNA wasn't invented then."
"The scripture teacher told the class that all people were descended from Adam and Eve," he said.
"'My daughter rightly pointed out, as I had been teaching her about DNA and science, that 'wouldn't they all be inbred'?
"But the teacher replied that DNA wasn't invented then."