Then be reasonable and explain the harm of long foreskin and the discomfort caused to you.

Then say that you are 18 years old and have the right to make your own decisions.

If you are embarrassed, you can wait a few years to do an operation yourself. Generally speaking, even if the foreskin is too long, as long as you pay attention to personal hygiene, it will not directly cause any diseases.

But especially don't sneak into a small hospital for circumcision now because you are shy. After all, this is an operation, and there is a risk of inflammation and infection. You may be trapped.