Foreskin flipping means that the foreskin flips open to reveal the glans, which is a normal phenomenon. When the male penis is born, the foreskin is wrapped around the glans, with time and age, the foreskin can be flipped open to reveal the glans, or even the foreskin will slowly retreat. In a weak state, the foreskin is not able to wrap the entire glans, or even not wrap the glans at all, which is a normal phenomenon. If the foreskin is still wrapped around the glans as an adult and there is no way to expose the glans, then if you can open the foreskin with your hand and expose the glans, it is considered circumcised. If the foreskin is wrapped around the glans and cannot be turned by hand, it is a circumcision. If you have a long foreskin, you need to pay attention to cleaning it every day, and if you have a stubborn foreskin, it is recommended that you have surgery to circumcise the foreskin.