And there should even be shit at the top of the Imperial Tower, cause there aren't any toilets there, or at least make toilets in the White Tower so that the tourists wouldn't poop themselves, and the guards should aggro if you shit in an inappropriate place, anb make a guild of feces, whose representative would contact you if you did that. The goals of the guild are to shit in various places, then to escape the chase.
And make a magic school of shit, so you could do fun stuff with shit, and make poisons out of shit. So that an Argonian could eat shit and restore health. (well, their hearts are even transplanted to humans) no, no, there must be a birthsign "Shit-eater" that would allow to eat some shit once a day and restore health, but would e.g. decrease charisma...
And the guild of feces should dwell in the sewers, they should have a cool headquarters there like the Dark Brotherhood, and they should cooperate with the thievery guild, for example, a thief from the guild steals something, he gets chased, and a guy from the fecal guild drops some shit, and the guards slip on it.
And for Skyrim, where there are fatalities, make it so it's possible to finish off crawling bandits with farting or with a hearty pile on the face, so that they asphyxiate and drown.
In Oblivion, it should be possible to inter-fart with another guild member in secret from the guard, like with Morse code, to be able to send signals even out of jail. And in some cities, for instance on holidays, farting should be like a crime punished by prison.
And make it so that if you fart in a temple, you can anger the divines, and if you get caught, you'd even be jailed.