The process of destroying someone's asshole so completely that afterward a terraforming process can take place to make the ass capable of sustaining life.
I forgot to get my viking wife a valentines day gift, so she proceeded in Asshole Terraforming so brutally that half of our livestock now live there, complete with a chemically stable atmosphere.
Sitting on the toilet and taking a crap of such unusual size and amount that it rises above the water level of the toilet, resembling land forming in an ocean.
The hypotheticalplanetary engineering process of deliberately modifying a planet's atmosphere, temperature, surface topography, and ecology to make it habitable for Earth-like life. It is the ultimate long-term project, taking centuries or millennia, using methods like introducing greenhouse gases to warm a frozen world, redirecting comets to deliver water, or seeding genetically engineered microbes to produce oxygen. It's playing god on a planetary scale, with untold risks and moral implications about the rights of any existing native life.
Example: The classic literary example of Terraforming is Kim Stanley Robinson's Mars trilogy, which details the centuries-long process of warming Mars, creating a breathableatmosphere, and establishing a biosphere. It's the transformation of a dead rock into a living world, a second Genesis for humanity.