DEMOLISHING her pussy

I swear all she does all day is masterbate and masterbate, it sounds like she’s mixing mac n cheese and you can hear it through the whole fucking house. My mom has been complaining to her but my sister just started going louder and louder. Worst part is my computer is in her room and everyday I have to go in there and see her just fucking DEMOLISHING her pussy, juices flying everywhere! and then i say “hey maybe out down a towel to keep clean atleast,” BUT SHE JUST FUCKING IGNORES ME. I cant stand living here honestly. Yesterday when I went to go use my computer it was absolutely drenched in her juices, and she stained at least 6 of my shirts by now. And all my friends at school tease me, “haha haha tobias got his sister’s grool on his shirt,” “girlcum tobias” has become my nickname. I hate it!