While shopping for a birthday card, I noticed a section which catered to animal people. There was a card which said, "there is a very fine line between cat lover.......

and nut case" and on that page showed a cat person with cats all over their body and their room.

What do you think? I don't think I have crossed the line, myself (I did laugh at the card), but do you suspect some people have? Do you know people who definitely have crossed the line?