tell it to the marines

1.
USUKAustraliainformalcolloquial
- Express disbelief in a story or claim, implying that it is so unlikely that only the gullible would believe it.
- Dismiss an assertion as a tall tale and indicate that the speaker will not be convinced.
2.
USUKAustraliainformaljocular
- Tell someone to go and say their boast or excuse to others, typically as a way of dismissing it.

Examples:

No examples available.