The term "heck" is a common exclamation used to express surprise, anger or disbelief. It can also be used as an interjection to indicate that something is not right or going wrong. The origin of this phrase dates back to the 18th century and it was originally spelled "h-e-double hockey sticks," which means a place or state of torment, usually associated with hell. However, over time, the term has evolved into its current form - simply as an expression of surprise or disbelief.