I'll admit that I had never actually read the paper in which Turing outlined his 'Imitation Game' until this week, and I really want to write a whole blog post which gives it a close reading. You should read it, too. I bet you didn't know that it has a whole bit about how to stop a polycule of male engineers gaming the test with their clone son:
Finally, we wish to exclude from the machines men born in the usual manner. It is difficult to frame the definitions so as to satisfy these three conditions. One might for instance insist that the team of engineers should be all of one sex, but this would not really be satisfactory, for it is probably possible to rear a complete individual from a single cell of the skin (say) of a man. To do so would be a feat of biological technique deserving of the very highest praise, but we would not be inclined to regard it as a case of ‘constructing a thinking machine’.