THE TRUE DEFINITION: An interjection said when hurt. No one knows where it came from, and nobody

Paper product used as a barrier against unwanted messes, such as the liner at the bottom of a bird cage.

a word that is usually said when you touch something hot/hit something painful or to sympathize for someone's pain

When you feel hurt or experience pain, either physically or emotionally because what someone has said or done to you.

Refer to: heartbroken, crushed or angry.

The sound coming from one's mouth whenst experiencing pain. Or when one can not say "oh no" quick enough. Related to a video of english children featured on youtube.

An expression of pain

1. An extremely common term usually uttered by one experiencing either physical or mental pain. Though usually associated with literal injury, can also be said when the user is the recipient of some insult or burn. Sarcastic undertones signify the user's view that the attempted insult or injury was ineffective.

2. An acceptable nick-name for one who over-uses the phrase "ouch". Usually meant as an insult, it can be a term of endearment under certain circumstances.