The Dictionary of American Slang suspects the phrase to have originated among California movie and show-business people and suspects the reference is to child clients of summer camps. (happy camper. Dictionary.com. The Dictionary of American Slang. accessed: June 26, 2015)
- (chiefly US) One who is thoroughly content or satisfied.
- I will be a happy camper when they fix the potholes on my commute.
- "You all look like happy campers to me," Dan Quayle to the people of American Samoa.