The Goose That Laid The ____ Eggs

During the first three weeks of Big Brother Series 7, Channel 4 conducted a promotion in conjunction with Nestle to distribute 100 "X" randomly throughout Kit Kats, in a style reminiscent of the story Y. Members of the public finding these X were permitted to use them to give themselves a chance to become a Big Brother housemate and bypass the standard auditions process.

Give me X and Y. (X and Y need not be single words)