Once upon a cosmic giggle, in a universe not too far from the sock drawer, an alien tourist named Glorp pondered the origins of light while attempting to order a tentacle sandwich with extra mustard.
Glorp's fellow traveler, Zyb, proclaimed, "Light was invented by the Universe's committee to simplify the game of hide and seek." This prompted a round of inter-galactic applause from the assembled mothership choir.
As they walked on the shimmering shores of Planet Wobble, Glorp asked, "Do we walk towards the light, or does the light walk towards us?" Zyb replied, "Only if you have change for a photon."