My college roommate had a plan so he wouldn’t have to do laundry more than once a month: he bought 30 pairs of underwear, so he would have a clean pair every day, and everything else could be reworn until the month was out.

My other friend in college had bedsheets, but never washed them or changed them for an entire year, on move out day his bedsheets were completely embedded in his leg hair like it was woven into it as part of the sheet.