Flying is tricky business! First you have to get special consent from the Council of Adolescents from the Land of the Man in the Moon. Usually persuading them to give you the permission isn't too hard, but Getting there can be damn near impossible! The only way (aside from riding a shooting star, which wouldn't be too smart considering human physiology) is to convince the Man in the Moon to take you there in a dream. The problem with that is, you usually forget that the guy exists when you're dreaming, or you see him but forget who he is, Or you're too busy flying in your dream to realize that you can't really leave the ground in the waking world. And if you Do recognise the Man, and that you can't fly in the waking world, you Still have to get him to Take you to his Land.... and sometimes he can be a REal Jackass ("I'm a very busy entity; try back in a year or so" or "give me One Good reason...).
Even after all this is done and overwith, you still have to Learn how to fly, which involves gettung the hang of tripping while forgetting to fall. Dohhh@&*^%!!