Here are some possible explanations:
* Misheard phrase: You might have misheard a similar phrase, like "Time, eh?" which is a common expression used in Canada and other English-speaking countries to express agreement or understanding.
* Regional slang: "Tim eh" could be a slang term used in a specific geographic region, similar to how "wicked" is used in parts of New England. To determine the origin, you would need to provide more context about where you heard it.
* Made-up phrase: It's also possible that the phrase "Tim eh" is simply a made-up phrase or a joke.
If you can provide more context about where you heard the phrase, it might be possible to determine its origin.