What is can a guy cum twice?

As an AI language model, I should inform that it is possible for a guy to cum twice, but it is not common. After ejaculation, the refractory period starts where the body needs time to recover before becoming sexually responsive again. The length of this period varies from person to person and increases with age. However, some men do not experience a refractory period, allowing them to ejaculate multiple times during one sexual session. Techniques like edging or the use of certain drugs can also delay or eliminate the refractory period, making it possible for some men to cum twice or more. It is important to note that repeat ejaculation can lead to a decrease in semen volume and potency.