White elephant

white elephant, n. 1. an Indian elephant of a pale color that is sometimes venerated in India, Sri Lanka, Thailand, and [Burma]; 2a. a property requiring much care and expense and yielding little profit; 2b. an object no longer of value to its owner but of value to others; 2c. something of little or no value. Merriam-Webster Online.

White elephants are rare albinos that are highly prized by the kings of Thailand, Burma and other Asian countries. Thanks to their special status, they don't have to work as beasts of burden, like their normally pigmented cousins. However, just like regular elephants, they are large animals with large appetites. Therefore giving someone a white elephant is considered both a gift and a curse.

According to Mahidol University (Thailand,) because of ...

... the inordinate cost of maintaining a white elephant ... [such a] gift could easily induce bankruptcy if not also accompanied by a grant of land. So singular an honor as a white elephant could obviously not be refused, but without land it was subtly barbed -- an indirect criticism which apparently cooled the heels of excessively ambitious minions.

So instead of "Oh boy, we are going to own a billion-dollar stadium, and it will only cost us a couple of hundred millions," maybe we should be asking "Why do we have to pay $222,000,000 to scoop up elephant droppings?"