Once had a BR era workmate who "never married" - had no washing machine and took infrequent baths (known as "Pongo") - he admitted when he had a (rare) bath he threw his workclothes into the water and did a treading motion and then put them on the line.
We never asked him to make the tea.
I think there still a few people around like that.
Only having baths once a week, (I think that goes back to a few years ago when it was a faff to run a bath, instead one had a tin bath in the Kitchen filled with kettles from the stove on Fri or Sat nights, the father went in first, followed by the mother, then the kids and if it was a large family the kids at the end probably came out no cleaner than when they went in.)
I heard too of someone who boasted he could make one pair of underpants last for about 12 days, by turning them around, then inside out, back to front, using leg holes as waist and other permutations. I have not tried this myself, the mind boggles.