happy camper

noun

1. Slang.,  a person who is cheerful and satisfied.

   There were no happy campers after the company was reorganized.

happy camper

noun

1. informal,  a happy, satisifed person (esp in the phrase not a happy camper )

Idioms and Phrases

A satisfied participant, a contented person, as in She loved the challenge of her new job; she was one happy camper. This expression is also often put in the negative, as in She hated the heat and humidity of the southern summer; she was not a happy camper. [Slang; mid-1900s]