As a Creator God he made a terrible glitch. He built the sky too low. It was just hanging there. Pretty soon most of the human race was suffering from concussion.
Apparently DOHKWIBUHCH was a fly-by-night jerry-building Creator God with no insurance. All the planning regulations had been ignored and the job was left in a terrible state. Fed up with no answers to their complaints, Earthlings decided to take matters into their own hands. Every living creature was rounded up and got ready for the Big Push.
"Altogether now, everyone and everything. One... Two... Three... Shove!" It was all a great success. With a mighty rumble, the sky rolled upwards leaving ample headroom for everyone. Only a few creatures forgot to let go and had to develop wings.