Is little white bumps on the underside of your penis some forming pimples with white puss inside natural?
However, it is important to keep in mind that various STD’s can cause changes to the appearance of your penis. In these cases, or if you are at all worried about something unfamiliar on your penis, it is best to go to a doctor and have it checked out. Just don’t freak out at the first sign of a something on your penis, which may in fact be perfectly natural.