["My roommate wants to get a cat. But he's already irresponsible enough as it is, and can't clean up after himself. How can he clean up after a cat, too? But I don't want to be the person to say no.."]
I think you will need to tell him how you feel about this. Otherwise you may end up taking more care of the cat than him.
My roommate wants to get a cat. But he's already irresponsible enough as it is, and can't clean up after himself. How can he clean up after a cat, too? But I don't want to be the person to say no...