1. A bird that is dirty: This is the most literal interpretation, referring to a bird that is covered in dirt or other grime. It's not a very common phrase, but it's possible someone might use it to describe a bird that's been playing in mud or has been sitting in a dusty area.
2. A sexually suggestive term: This is the most common interpretation, and it's a vulgar way to refer to a woman. It's a derogatory term that's considered offensive and should be avoided.
3. A name or nickname: It could also be a nickname for a specific bird, especially if the bird is known for being mischievous or getting into trouble.
4. A slang term for a car: In some areas, "birdy" can be slang for a car. So, "dirty birdy" could be a term for a dirty car.
To understand the meaning of "dirty birdy" in a specific context, you need to consider the overall tone and the surrounding words.
It's important to be aware of the potentially offensive nature of this phrase and use it with caution.