RichThesaurus
happy as a pig in shit
vs
morose
happy as a pig in shit
adj
Extremely happy; obviously satisfied and carefree.
morose
adj
Sullen, gloomy; showing a brooding ill humour.
How often have the words
happy as a pig in shit
and
morose
occurred in a corpus of books?
(source:
Google Ngram Viewer
)