Alien Extermination Kit
From Tardis Wiki, the free Doctor Who reference
In Earth-33⅓, an Alien Extermination Kit was developed and sold by Howett and Quinn for "only £150 plus VAT". To promote it, Quinn and Howett published a "quiz" to allow children to divine whether their Dad was an evil alien in disguise. (GAME: Is Your Dad An Evil Alien? [+]Loading...["Is Your Dad An Evil Alien? (game)"])