* It's a misheard or misremembered phrase: There might be a similar saying that you're thinking of.
* It's a regional or local expression: The phrase could be specific to a particular place or community.
* It's a made-up phrase: Perhaps someone coined it for a specific situation or humorous context.
If you can provide more context about where you heard this phrase, it might be easier to identify its origin.
For example, is it a saying related to:
* Size or scale: Maybe it refers to something being extremely small or insignificant.
* Hiding or secrecy: Could it suggest something hidden away or being kept secret.
* Unlikely location: Perhaps it refers to something being found in an unexpected place.
Please provide any additional information you have about the phrase, and I'll be happy to help you find its meaning!