* A regional expression: Some phrases are common in specific locations but not others. It's possible this phrase is used in a particular community or region.
* A slang term: Slang often evolves and changes quickly. It's possible this phrase is a recent slang term that hasn't gained widespread usage yet.
* A misheard phrase: It's possible you've misheard a similar phrase, or it's a variation of a different phrase that you've misremembered.
* A typo: Perhaps the phrase is a misspelling of something else.
To help understand the meaning, please provide more context:
* Where did you hear this phrase? (e.g., in a book, movie, conversation)
* What was the context of the conversation? (e.g., what were the people talking about?)
With more information, we might be able to figure out what "ding the lug" means.