RichThesaurus
I'll be a monkey's uncle
vs
oh my gosh
I'll be a monkey's uncle
phrase
Often preceded by well: expressing complete surprise or disbelief.
oh my gosh
intj
oh my God!
How often have the words
I'll be a monkey's uncle
and
oh my gosh
occurred in a corpus of books?
(source:
Google Ngram Viewer
)