"Blue balls" is a colloquial term used to describe a temporary condition that can occur in males when sexual arousal is not followed by ejaculation. This can lead to discomfort or a feeling of heaviness in the testicles due to increased blood flow and pressure in the area. The condition is not harmful and typically resolves on its own. The term is often used in discussions about sexual health and relationships. While it can be uncomfortable, it is important to understand that "blue balls" is not a medical condition and does not require treatment. Engaging in sexual activity or simply waiting for the arousal to subside can alleviate the discomfort.