There was a time when the ponies did not have smoothies. They turned their heads skyward and cried for a fruity and slushy refreshment, but the princesses couldn't help. Then an alien descended from on high, a chalice in it's hand, and it grinned. For the alien knew of such a thing, and he was willing to share it, for a price.

And that price was two bits a cup.

Fair warning: Word play.