ATTACK OF THE UNSINKABLE RUBBER DUCKS 'genuinely impossible phenomenon', page 124 (as mentioned in the Acknowledgements page)

The only genuinely impossible phenomenon depicted in this book is a character being in possession of the PC game "Duke Nukem Forever". Impossible because, despite being intially scheduled for release in 1997, ten years on there is still no danger of its DVD taxing anyone's optical drives any time soon. (In fact, the technology that will finally be used to ship the game may not even be invented yet.)
Wired News created the Vaporware Lifetime Achievement Award exclusively for DNF and awarded it in 2003. Four more years having passed, I thought I would mark the tenth anniversary of its first failure to hit the shelves by including a reference to it in the only format in which the game is currently available: that of fiction.
Told you it was geeky.