What is gyat mean?

There is no widely known or established meaning for "gyat mean." It's possible that:

• It's a misspelling: Could you be thinking of a similar-sounding phrase or word? Please double-check the spelling.
• It's a niche term: It might be jargon specific to a particular field, community, or language. If you can provide context (where you encountered this term), it might help determine its meaning.
• It's a newly coined word or phrase: New words and phrases are constantly emerging. Without more information, it's impossible to define it.

To help me understand what you're looking for, please provide more context. Where did you see or hear this term? What was the surrounding conversation or text about?