I believe there's a misunderstanding or a typo in your request. "Grenade wagin blue back hasu" doesn't appear to be a coherent phrase or established topic. It's possible:
- It's a misspelling: Could you double-check the spelling? Perhaps you meant a specific type of fish, plant, or another object? Providing more context would be helpful.
- It's a niche term: It might be a term used within a specific community or hobby that isn't widely known. If so, please provide more information about the context.
- It's a newly coined phrase: If it's a newly created term, defining it would help me understand what you want me to write about.
Please clarify your request with more details so I can create a helpful and informative blog post. I need more information to understand what "grenade wagin blue back hasu" refers to before I can write an SEO-optimized blog post about it.