I thought the idea was pretty funny. I do admit that it was kind of dumb. I guess the length was pretty good. The purple one at the beginning reminded me of Lumpy Space Princess. Dang, she's so funny. The voices were pretty good.
You probably could have used music. It seemed a bit bland. At least there's sprinkles to put on top of them, hee hee. I wasn't expecting that ending. It's nice to have such a happy one.