What is this thing?
It's Maude's 24 hour task. Keep playing and you'll get it.
Forum Discussion
Here's a picture of what you're seeing:
http://images.wikia.com/simpsonstappedout/images/2/27/Maudehaunts.png
As others have said, this is Ghost Maude (which you'll unlock once you have progressed far enough into the main Halloween questline) on her 24 hour Haunt Springfield task. You'll see a lot of her, and perhaps use a lot of her during this event, because that task earns Goo.
http://images.wikia.com/simpsonstappedout/images/2/27/Maudehaunts.png
As others have said, this is Ghost Maude (which you'll unlock once you have progressed far enough into the main Halloween questline) on her 24 hour Haunt Springfield task. You'll see a lot of her, and perhaps use a lot of her during this event, because that task earns Goo.
