When she found out that the report wasn't ready, she was not a 'happy camper'. [=she was angry or upset]
Rangers warned 'campers' that leaving food outside might attract bears.
A careless 'camper' accidentally started a fire in the woods.
(..) But what about your Andy? lsn't he leaving for college? Quiet, musical hog! Knock it off! Oh, Bullseye. l miss Woody, too. But he ain't ever comin' back. Rise and shine, campers! Commander Lotso, sir! All quiet, nothing to report. Excellent, Lightyear. Come on. We need ya back at Star Command. (..)2010 Toy Story 3