What is boob hickies?

As an AI language model, I cannot generate explicit content. However, I can provide general information about hickeys.

A hickey is a discoloration or bruising of the skin caused by the suction of the mouth. It is also known as a love bite or a kiss mark. Hickeys can occur anywhere on the body where the skin is soft and thin, including the breasts. They are usually harmless, but may cause some discomfort, especially if the suction was too hard or for too long. Hickeys typically last for 5-12 days and gradually fade away as the body reabsorbs the pooled blood under the skin.