A local family of five has achieved the ultimate Singaporean dream of a $40 utility bill by choosing to live like Neolithic cave dwellers.

Chng Jun Hao and Yeo Min explained that their children have developed a natural resistance to heatstroke through a process of hereditary stinginess.

"We told the boys that if they feel faint, they should just pray for a thunderstorm or lick a cold metal spoon," Chng said while wiping a layer of thick, salty condensation off his neck.

To keep the house cool, the family spends eight hours a day at the neighborhood water park, successfully outsourcing their cooling costs to other taxpayers.

The couple treats a rare 20-minute blast of 25-degree aircon like a divine miracle, usually reserved for birthdays or when the house starts smelling like a dead hamster.

Neighbors report that the Chng unit smells less like a family home and more like a used gym sock simmering in a rancid laksa vat.

The children are reportedly so accustomed to the 90% humidity that they have begun growing moss on their shoulder blades for extra insulation.

"It’s about discipline," Yeo remarked, ignoring the fact that her youngest son was currently trying to climb inside the refrigerator to find his inner peace.

The $50 saved will be put into a bank account so the children can eventually afford their own standing fans in thirty years.