Medically reviewed by Amelia MacIntyre, DO An outie belly button is mainly a cosmetic issue and doesn't usually need treatment.Umbilical hernias are a common cause of outie belly buttons and may ...

Earwax, boogers, toenail fungus — the body can be pretty gross sometimes. Don’t forget to add “belly-button gunk” to that list. And when you see something in there, you probably want to get it out.