My first college dorm roommate was into the LARP scene. Huge nerd.
Showered once a week. Had three shirts and one pair of pants that he never washed. Started the semester off with an unopened bag of underwear & undershirts that would last him the entire semester. He would wear underwear until they both sides were caked in shit and urine, and then throw them in the closet and grab a new fresh pair out of the bag.
His LARP'ing friends were somehow worse. He wasn't poor, either - he just honestly believed he didn't stink.