The narrator discusses various everyday items and their hidden uses. Here are the key points:
1. **Weather App Percentage**: The percentage next to raincloud icons on a weather app doesn't represent the chance of rain. In the US, it's a product of the forecaster's confidence and the forecasted area. For example, if the forecaster is 100% certain that rain will cover 30% of a city, the percentage shown will be 30.
2. **Fry Flappers**: The bendable flap on McDonald's fries can be used as a makeshift plate for condiments.
3. **Self-Service Checkout**: The loud voice commanding you to place items in your bag can be turned off on some self-service checkout machines.
4. **Hand Sanitizer**: Hand sanitizer can also be used as a screen cleaner for devices and a stain remover for clothes.
5. **Microwave Mesh**: The mesh over the door of a microwave blocks harmful microwave radiation, preventing it from escaping and potentially harming you.
6. **Towel Folding**: A special folding technique can be used to secure a towel around your waist, preventing it from falling down.
7. **Banana Stems**: Wrapping the stems of bananas in clingfilm can slow down the ripening process, keeping them fresher for longer.
8. **V-Stitch**: The V-shaped stitching pattern on some sweaters was originally used to hold a piece of triangular cotton behind the main material of the sweatshirt.
9. **Pool Noodle**: A pool noodle can be used to channel air through the vent of a car, providing a cool breeze.
10. **Smartphone Antenna Lines**: The small lines on the side of a smartphone are antenna lines, which allow the phone to emit and receive radio waves.
11. **French's Mustard Lid**: The lid of a French's mustard bottle has a hidden knob that can be used to click the lid into place, preventing it from getting in the way when squeezing out the mustard.
12. **iPhone's Back Button**: The iPhone 8 and later models have a secret touch button hidden on the back of the device, which can be used to perform various functions.
13. **Erasers**: Erasers can be used to clean suede shoes, remove gluey marks, and even as a makeshift cheese grater.
14. **Shopping Cart Coin**: Some house keys fit perfectly into the coin slot on shopping carts, releasing the lock and saving you a trip back home.
15. **Nonic Pint Glass**: The bulbous bulge at the top of a nonic pint glass was developed to reduce the chance of the glass slipping out of people's hands when wet.
16. **Lip Balm**: Lip balm can be used as a lubricant to reduce friction and soothe bug bites.
17. **Bank Card Grater**: The embossed numerals and lettering on a bank card can be used as a makeshift cheese grater.
18. **Deco Lug**: The deco lug, or decorating lug, in the bottom of a plastic water bottle ensures that the artwork is always printed in the same position for every bottle.
1. The narrator discusses the secret uses and reasons for the designs of everyday items.
2. The percentage next to raincloud icons on a weather app refers to the forecaster's confidence of rain in the US, not the percentage chance of rain.
3. McDonald's fries can be used as a makeshift plate for condiments.
4. The self-service checkout at the store has a loud, overly self-assured voice that can be turned off.
5. Hand sanitizer can be used as a screen cleaner for devices and a stain remover for clothes.
6. Microwave ovens have a mesh over the door to block harmful microwave radiation.
7. The V-shaped stitching pattern on some sweaters used to hold a piece of triangular cotton behind the main material of the sweatshirt.
8. Pool noodles can be used to channel air through the hollow center of the tube, providing a refreshing breeze.
9. Antenna lines on smartphones allow radio waves to be emitted and received.
10. Rat guards can be slid onto mooring lines to prevent rats from getting onto boats.
11. The back button on an iPhone 8 or later can be activated in the accessibility settings to perform various functions.
12. Erasers can be used to clean suede shoes and remove gluey marks left by price tags and stickers.
13. Some house keys can fit perfectly into the coin slot on shopping carts.
14. The bulge at the top of a nonic pint glass was developed to reduce the chance of the glass slipping out of people's hands and to prevent damage to the rim of the glass.
15. Lip balm can be used as a lubricant to reduce friction on the inside of the heel of shoes and to loosen a stuck zipper.
16. Lip balm containing menthol and camphor can be used to soothe bug bites.
17. The embossed numerals and lettering on a bank card can be used as a makeshift cheese grater.