Sound of Happiness

Happiness: the quality or state of being happy.

When that sound rings through the air, reaching your ears, you assume that someone is happy. But at the same time, that sound can mean a million contradicting things.

Discomfort.
Secrets.
Hesitation.
Annoyance.

So many different things, so how do you tell them apart? How do you know which one you're supposed to use?

Some people say you use context clues.
Context Clue: A method by which the meanings of unknown words may be obtained by examining the parts of a sentence surrounding the word for definition/explanation clues, restatement/synonym clues, contrast/antonym clues, and inference/general context clues

Some people say you can tell by their body language.
Body Language: Non-verbal, usually unconscious, communication through the use of postures, gestures, facial expressions, and the like.

Some people say that your instincts will tell you.
Instincts: A natural or innate impulse, inclination, or tendency.

All these could be right, and could be wrong. You'd never know the real answer.
Although I would think the easiest answer is right infront of you.

Just laugh.