In your day-to-day life, you probably use an astounding array of different items without stopping to think much about them.

But, turns out, many of them actually have secret uses and crazy reasons for their designs that you'd never have guessed.

From your phone to your bank card, get ready to uncover some of the best kept secrets in everyday things.

They're listening. You're listening. You're listening. some of the best kept secrets in everyday things.

Before going out, checking the weather app on your phone for those all too familiar rain cloud icons is always wise. But what do you think the percentage next to those clouds means?

Most people assume that the number refers to the percentage chance that rain will fall in that area at the given time.

If you live in the UK and some other parts of the world, you'd be right to assume that. However,

in the U.S., this is not the case. Stateside, there's an equation behind the percentage. The forecaster's

confidence of rain multiplied by the forecasted area. So if the forecaster is 100% certain that

rain will cover 30% of Albuquerque, New Mexico,

the percentage shown if you live in Albuquerque will be 30%.

Equally, if the forecaster is only 50% certain that it'll rain, but that if it does it'll cover 80% of Albuquerque,

the percentage on your weather app would read 40%. This is because 50% or half cover 80% of Albuquerque, the percentage on your weather app would read 40%.

This is because 50% or half of 80% is 40%.

But that percentage doesn't tell you how heavily it's going to rain, which is why even

if you see a nice small 10%, I wouldn't rush outside without packing a coat, unless the forecaster has a direct connection

to St. Peter, that is. Next up, when you're hungry and need a quick bite to eat without going

to the effort of making anything, good old Ronald McDonald is always there to help. But the

next time you're tucking into your McDonald's fries, take note of the bendable

flap near the top of the box.

Some people bend it towards the fries to cover them up and keep them warm.

I'm not so patient, but you can also flip that flap of card backwards and use it as a

...