My pet peeves are the following:
Storm: When he's in one of his very needy, buggy moods and he nips me if I don't pay enough attention to him. He thinks he's a dog so I guess that's why he sometimes acts more like a dog. He'll also nip me to try to wake me up in the morning.
Pepper: When he gets very excited and drools all over me. He'll also get nippy too. Also when he jumps out of the litterbox and then goes over to his food dish and tries to bury his food. The part that bothers me is that he leaves litter all over the place mat. He also sometimes forgets to cover up his business.
Sunny: When he meows very loud early in the morning or very late at night. Also when he plays in the water dish which makes a big mess. When he tries to wake me up by meowing in my ear. Also when he forgets to cover up his business.

Even though my cats can be bad boys, I still love them very much. I also can't stay mad at them very long because they're so cute.