It's probably in your fridge right now. This is how to drink the fruit juice of your choice and appreciate its unique qualities.

[edit] Steps

Select the juice you wish to sample. There are thousands of different types of juices out there, and you may have fun choosing just the right one. You can either start with an old favorite (such as apple juice) or go the adventurous route and test out something entirely new (such as dragonfruit-papaya, or lychee).
Chill the juice for a few hours. It should be cold, but not too cold. Don't add ice, as the melting cubes will dilute the juice. If you absolutely must, only add one or two ice cubes.
Pour a small amount of juice into a cup, only about enough for a few sips. As you pour the liquid, pay attention to the colors and delicate fragrances. Some juices are a strong, bright red, while others can be clear amber, green, pink, or nearly any variety.
Bring the cup to your mouth, inhaling deeply through your nose to capture the wonderful fruity scent. What does it remind you of; a color, a particular song, a happy memory? Let these pleasant thoughts enrich the experience.
Sip a small amount of liquid, rolling it over your tongue. The taste of every juice is unique, and has various special qualities and subtle sensations. As you drink, continue inhaling the scent of your chosen juice, adding another dimension to the flavor. By all means, drink more, just don't guzzle it all at once. Enjoy it!

[edit] Tips

It's best to enjoy a juice in this way alone or with a person you trust. Doing this in public may earn you some strange looks or confused expressions from others who do not understand your appreciation for all things juicy.

Before you select a juice that you've never tried before, be sure that you aren't allergic to any of the ingredients. Also, be sure that it is made in an area that you are comfortable using products from.