"Cloud Mows the Lawn" is a Final Fantasy fic that starts with Cloud mowing the lawn and rapidly plunges into Do Not Want territory. Specifically, Tifa, while watching Cloud mow the lawn, needs to go to the bathroom and doesn't want to stop watching, so... yes, this goes exactly where you're thinking, and gets worse from there. It has three sequels: "Cloud and Tifa at the Mall," "Cloud Mows the Lawn Again," and "In the Park." They proceed along much the same lines, except that Aeris is involved in the last one.