A Treatise on the Donut-shaped Universe

In the year 2154, the donut universe was born. It began as a small, fluffy cloud of sugar and glaze, but soon expanded into a vast expanse of sprinkles, frosting, and hole-ness.

And so, the donut universe expanded, expanded, expanded, until it reached the limits of its own deliciousness, at which point it... imploded. Into a donut.