What's the name of this Facebook app?

I’ve had several friends all suddenly use it out of the blue, so I assume it’s new. One friend of mine is posting 3–5 an hour and it’s driving me bonkers.

The app makes little one panel cartoons where you can customize the heads to look like you or your friends. Then you can write your own captions to make for hours of hilarious entertainment for yourself.

I’m just curious to know the name of the app.