Okay kiddo, "donas de fuera" is a Spanish phrase that means "donuts from outside". It's used to describe donuts that are not made in your local bakery or shop.
So imagine this, when you go to your favorite donut shop, those donuts are made there, right in the store. But sometimes, people want to try donuts from other places like big famous donut chains or mom-and-pop shops that are far away from your hometown. And those donuts are called "donas de fuera".
It's like when your mom makes chocolate chip cookies at home, and they are delicious. But then, you try a chocolate chip cookie from your friend's mom, who has a different recipe, and it tastes different but still yummy.
Hope that makes sense, little one!