a happy camper

happy camper

Someone who is happy or content. Often used in the negative to indicate someone who is particularly unhappy, irritable, or displeased. I just got a raise, so I'm a happy camper today. I could tell the crew members were not happy campers after having to work so late. She was not a happy camper when her work permit application was denied.
See also: camper, happy
Farlex Dictionary of Idioms.

a happy camper

If you say that someone is a happy camper, you mean that they pleased about something. When Oisin scored that goal I was a happy camper again. Note: You can also say that someone is not a happy camper if they are angry, upset or not satisfied about something. I just wasn't a happy camper. I felt a piece of me was missing and I didn't know what it was.
See also: camper, happy
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • a happy bunny
  • be (not) a patch on
  • be out of (one's) league
  • be out of somebody's league
  • accompany (one) on a/(one's) journey
  • accompany on a journey
  • (one) puts (one's) pants on one leg at a time
  • brief (someone) about (someone or something)
  • brief about
  • bring (someone or something) into contact with (someone or something)
References in periodicals archive
Are you a happy camper? Research shows nights under canvas make you happier - and keep you that way.
IN TENTS... HAPPINESS
I used to be a happy camper, or maybe don't sleep at all....
QUICK ONE WITH MOWGLI
Your hunk might not bag his sleeping bag sesh, but give him a chance, to make you a happy camper. Maybe he'll suggest a post-bash din-din, If he's fixated on the great outdoors and roasting on an open fire, he might just say, "Yeah, well, camping is awesome.
Tell it don't yell it: How to get what you want the smooth takin' way