I'm going to make it obvious to my in-laws that I hate living with them
Why would you make that obvious?
They are used to it, I don't think they care. They will get over it.
You should respect your in-laws. You live with them and should be kind to them.
I'm going to say fuck them in the morning and make it clear that I hate living with them.
This is a really bad thing to do, it is going to cause problems with them and your spouse. If you need to live there then you need to treat them with respect.