RichThesaurus
pull someone's bacon out of the fire
vs
pull someone's fat out of the fire
pull someone's bacon out of the fire
verb
To rescue someone, especially at the last moment.
pull someone's fat out of the fire
How often have the words
pull someone's bacon out of the fire
and
pull someone's fat out of the fire
occurred in a corpus of books?
(source:
Google Ngram Viewer
)