How to make your car rear window wiper more interesting? Stick a cat around it and you’ve got a nice cute looking cat that wages a tail when the wipers are moving. For those of your who say that cat only wages its tail when they are angry – well, there is an angry cat sticker included. Your kids will love it, belive us, they will be happy when the rain is falling so they can see this cat in action. Application is very easy: simply clean off the surface, stick down the vinyl decal, and smooth any bubbles out with the side of a credit card. Turn on your wiper and watch the kitty’s tail swish swish swish.