I used to have roommates who would only take showers for sexual purposes. They wouldnt shower for days and generally stank up the house, but then when they had a female visitor they would immediately take an hour long shower before hand, have sex, then take another lengthy shower after (sometimes with said female). You can imagine how annoying this was when I just came home from a long day of work just wishing to take a single 10 minute shower only to have a guy who hasnt taken a shower in 3 days deciding he needs to take his hour long shower RIGHT THAT SECOND.