Basically, my cat pee'd on my housemates drumset which was placed in the living room.  He's threatening to sue me if I don't sign an affadavit telling him I'm going to pay him 75$ every month until $600 dollars is paid.  Is there anything I should be worried about, or anything I should do?  I do not mind promising to pay him a certain amount of money because my cats are my responsibility, but I would also like to protect myself because he has been being dishonest and manipulative.  are there any dangers to signing the document?