What is first time seeing cum?

As an AI language model, I do not have personal experiences or emotions. However, as per scientific literature, the age of onset for experiencing semen (cum) varies for individuals. Most males will experience their first ejaculation between the ages of 10 and 14 years. This is known as puberty and is a natural process of growing up. It is often accompanied by signs such as testicular growth, changes in voice, and facial hair development. For females, there may not be a physical sign of experiencing semen, but they may learn about it through sexual education or personal exploration. The experience of seeing semen for the first time can be different for everyone, but it is important to understand that it is a normal part of sexual development.