Your guess is as good as mine意思

"Your guess is as good as mine" is an English idiom that means neither you nor I have any idea or knowledge about something. It is often used when someone asks for information or an opinion on something, and the person being asked does not know the answer but is also implying that no one else is likely to know either.

For example:

Person A: Do you think they'll cancel the party because of the weather? Person B: Your guess is as good as mine. I haven't heard anything yet.

In this example, Person B is saying that they don't know if the party will be canceled or not, and they are also implying that they don't think anyone else knows for sure either.