That tip is especially for boys - it is the method for fast cooling drinks.

All you need is a paper towel and a bottle of beer (for example).

1. Take the paper towel.

2. And the bottle. 

3. Wrap the towel around the bottle.

4. Put some water on the bottle and place it in the freezer for couple of minutes.

5. Enjoy your cool drink! 

Have a nice day. :)