When you start meowing randomly at people (or maybe I'm just crazy lol).
When you can't pick your sister up from school because you have to see what Special Panel B goes for, even though you know you can't afford it.
When you bring a kitty to auction because you're out of prims and come home with 3.
When you can't afford more land, but then it becomes a necessary bill.
When you remember your kitties' vitamins before your own.
When you know exactly which traits your RL cat has, and how much he would go for at auction.
When you tell your dad you sold a kitty for $80, but you
forget to mention that you spent $50 on your Russian Black.
When you get mad because your RL cat won't bring you back the ball you threw.