NOT A HAPPY BUNNY
Meaning of NOT A HAPPY BUNNY in English
( BrE ) ( NAmE not a ˌhappy ˈcamper )
( informal ) not pleased about a situation :
She wasn't a happy bunny at all.
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005