The blade's distinctive forward drop is intended to act as a weight on the end of the blade and make the kukri fall on the target faster and with more power. Although a popular legend states that a Gurkha "never sheathes his blade without first drawing blood" (this is said to be what the small, sharp notch on the blade near the handle is for: in case you wanted to draw your kukri for a non-militant purpose, and needed to draw blood before sheathing your knife. You could scrape your thumb on the notch, draw blood, and sheathe your knife without breaking tradition), the kukri is most commonly employed as a multi-use utility tool rather like a machete. The kukri also has a religious significance in the Nepalese form of the Hindu religion. During the annual Dashain festival, kukris are ceremonially blessed.
http://en.wikipedia.org/wiki/Kukri