Rotten fruit refers to fruit that has decayed or spoiled due to the growth of bacteria, fungi, or other microorganisms. This process often results in a change in color, texture, and smell, making the fruit unappetizing and potentially unsafe to eat. Common signs of rot include mushiness, dark spots, and a sour odor. The decomposition of fruit can occur for various reasons, including over-ripening, improper storage, or damage from pests. Bananas, apples, and peaches are examples of fruits that can rot quickly if not stored properly. Consuming rotten fruit can lead to foodborne illnesses, so it's essential to inspect fruit before eating.