Want this question answered?
Because it somewhat resembles a button and it is on your belly.
Yes. "Belly button" is another name for a person's naval.
a dirty navel
a dirty navel
Abdomen
He was rumored to not have a belly button.
Umbillical Cord
Anti-navel
Your navel
umbilical area
I don't know what you mean by "undo" your belly button but you can get what is called an "umbillical hernia" inside near your belly button.
because it has a bell y button shape!