Me and my sister currently live in a house that's owned by our uncle with one other roommate, and it's been that way for almost two years now. He's one of her closest friends from high school, but now that's starting to change quickly. Before he was a bit sloppy, but the mess was for the most part confined to his own room (which is fine by me), he did help out with chores, and he was easy going back then.
Now it's all changed. He's become a misogynist and he's always saying sexist stuff to my sister when I'm not around. He's stopped doing any chores altogether, he uses the internet and cable TV that I'm paying for but doesn't even bother chipping in his share, he leaves his laundry in the washing machine/dryer and doesn't take it out, and he takes 1 hour long showers TWICE a day (for reference, my sister takes less than half an hour). Whenever I ask him to clean/pay for internet/etc, he says "yeah I will" but never does it. Whenever my sister asks him to, he just calls her a $#*! and tells her to shut up. His parents pay for his rent, and he works full time, so he definitely has the money, he just doesn't like parting with it.
Part of the reason why he spends so long in the shower is because he shaves his entire body every day, which I recently discovered he's using MY razors to do. God knows what he's doing with my other toiletries. We decided we had enough and politely asked him to leave the house. We are putting his room up for rent here on Roomster and I couldn't be happier.