There's many a slip 'twixt the cup and the lip

Cultural  

1. Between the time we decide to do something and the time we do it, things often go wrong.

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Example Sentences

The play's title is lifted from an old English expression "There's many a slip 'twixt the cup and the lip," meaning a seemingly settled event can still unravel.

From US News • Nov. 20, 2015

"There's many a slip 'twixt the cup and the lip," said Poppins, when he was told.

From The Struggles of Brown, Jones, and Robinson By One of the Firm by Trollope, Anthony

"There's many a slip 'twixt the cup and the lip!"

From Journeys Through Bookland, Vol. 4 by Sylvester, Charles Herbert

Of such kind is "There's many a slip 'twixt the cup and the lip."

From The Little Manx Nation - 1891 by Caine, Hall, Sir

There’s many a slip ’twixt the cup and the lip.

From Aileen Aroon, A Memoir With other Tales of Faithful Friends and Favourites by Stables, Gordon