What is biggy rat and itchy brother?

As an AI language model, I don't have any specific information about "Biggy Rat" and "Itchy Brother". However, I can give some general information about rats and itchiness.

A rat is a small rodent with a long tail and sharp front teeth. Rats are known for their agility, intelligence, and ability to adapt to various environments. They are often considered pests in urban areas, where they can cause damage to property and carry diseases.

Itchiness is a sensation on the skin that causes a desire to scratch. Itchiness can be caused by a variety of factors, including allergies, insect bites, skin conditions, and certain medications. Itching can be a symptom of a more concerning underlying condition, and can be an important sign that medical attention is needed.