* Hola: This is a common Spanish greeting, meaning "Hello".
* Qué tal: This is another common Spanish phrase, meaning "How are you?" or "What's up?".
* Mi amigo: This means "My friend".
* Plástico: This means "Plastic".
Putting it all together, the phrase is a playful way of addressing someone, likely a friend, with a touch of sarcasm or humor. The "plastic friend" could be referencing something artificial or not truly genuine, or simply be a playful nickname.
The phrase is not a standard Spanish expression and is likely used as a joke or in a specific context. It's important to consider the tone and context when interpreting this phrase.