Do you understand?" Uttering this question repeatedly, a very cautious Malorie Hayes, played by Hollywood biggie Sandra Bullock, is laying down orders for her kids - named Boy and Girl - in the opening sequence of Bird Box, where under no circumstance are they allowed to take off their blindfold, because all hell has broken loose in the outside world.

Leaves float in mid-air; there's a mysterious force that's causing mass suicides around the world. You see it, you die. So, a blindfold is pretty much the oxygen you need. But people around the world have taken Hayes' advice a little too seriously. They've put on blindfolds - manoeuvring about everyday tasks like eating, walking around the house or driving - and the result has led to a series of unfortunate events under the #BirdBoxChallenge. While blindfolded, a man accidentally slammed a toddler into a wall, a 17-year-old in Utah crashed into oncoming traffic, and a tattoo has been attempted in Brazil with an unsurprisingly undesirable outcome.