RichThesaurus
two sandwiches short of a picnic
vs
wet behind the ears
two sandwiches short of a picnic
wet behind the ears
adj
Inexperienced; just beginning; immature (especially in judgment).
How often have the words
two sandwiches short of a picnic
and
wet behind the ears
occurred in a corpus of books?
(source:
Google Ngram Viewer
)