Meaning of the word "jam tomorrow" in English

What does "jam tomorrow" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

jam tomorrow

US /dʒæm təˈmɑː.roʊ/
UK /dʒæm təˈmɑː.roʊ/
"jam tomorrow" picture

Idiom

1.

a promise of good things in the future that never materialize

Example:
They keep promising us bonuses, but it's always jam tomorrow.
Don't fall for their talk of jam tomorrow; demand action now.
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