Think the kids are asleep? Sure they're not doing this instead?

These twins are meant to be sleeping. But, um, instead…

The parents of these twins thought that each night, after tucking them into neighbouring cots, they would fall fast asleep. It soon became obvious that this wasn’t the case. We’re not sure what triggered their suspicions. Perhaps the wrong twin was in the wrong cot, perhaps these girls accidentally fell asleep in the same cot after getting up to their night time hijinks.

Regardless, we are delighted to watch the vision captured by these savvy parents.

It starts with this shot. The twins are in the same cot. How? Well, it turns out they are excellent climbers.

The dominant of the two twins, the blonder one on the right, then teachers her sister who she calls "Melis" how to climb.

Well, once that's mastered, it's on! They don't stay still for long. They spend the rest of the night climbing back and fourth, jumping, laughing, playing, until they fall into an exhausted sleep.

Watch all their shenanigans here. It's especially awesome from 0.42:

What have you busted your kids getting up to at night while they are meant to be sleeping?