RichThesaurus
do a vanishing act
vs
fly the coop
do a vanishing act
fly the coop
verb
To depart hastily or unannounced; to escape or flee.
To escape from a pen or similar enclosure.
How often have the words
do a vanishing act
and
fly the coop
occurred in a corpus of books?
(source:
Google Ngram Viewer
)