A little on Roman cities in the pre-underwear age, as I am immersed in finishing The Time of Troubles. Although public baths had toilets, albeit shared in common, and although the most lavish peristyle house might have had a latrine next to the kitchen, most places did not. So people would relieve themselves on the street, in alleys, on stairways of houses, a corner of the bathhouse or even on tombs. A walk along the street would encounter many piles of fresh and not so fresh bowel movements. Apart from the smells and sights, a number of writings indicate how common this was.
You read to me as I stand, you read to me as I sit, You read to me as I run, you read to me as I shit (Martial, Ep 3.44).
And in various cities the following notices were scrawled:
Shit with comfort and good cheer, so long as you do not do it here (Pompeii).
If you shit against the walls and we catch you, you will be punished (Pompeii).
Twelve gods and goddesses and Jupiter, the biggest and the best, will be angry with whoever urinates or defecates here (Rome, Baths of Titus).
Whoever refrains from littering or pissing or shitting on this street may the goddesses in general favour. If he does not do so let him watch out (Salona).