If fairies were real, I'm pretty sure these would be their magic wands. Flitting around and granting wishes and collecting teeth and doing whatever else it is fairies do, they must burn a lot of calories. A frozen banana with sprinkles would be the perfect snack for a busy sprite.
When I was a teenager I used to go to Denny's all the time with my friends and get a banana split. Without fail, if I turned my back for a second, my ice cream would be destroyed. Here's a solution. Take one. It's yours. Leave me be!