tinky tinky's story reminds me of when our neighbor banged on our door, demanding that we come get our cat out of her garden. Now, as a backstory, our three cats (who all happen to be black) used to be outdoor cats, but they wandered into her garden once too many times and she threatened to kill them. So, to keep the peace, they became indoor cats.
Me: It's not our cat. Ours are all indoors.
Her: Yes, it is!
Me: It's not. See? All three of ours are sitting right there.
Her: It HAS to be your cat - it's BLACK!
Because no-one besides us has ever owned a black cat, I guess.