RichThesaurus
bed of roses
vs
rainbows and unicorns
bed of roses
noun
A pleasant or easy situation; an untroubled existence.
rainbows and unicorns
noun
A wonderful (but often unrealistic) scenario.
How often have the words
bed of roses
and
rainbows and unicorns
occurred in a corpus of books?
(source:
Google Ngram Viewer
)