It means he has a navel piercing, nothing more and nothing less. Don't go looking deeply into something that is not of deep meaning or basis.
A belly button ring is a body piercing placed in a cauterized area of the belly button.
yeye
It will get stared at more often.
No!
Do you mean if the hole of it gets stretched? Because the exact same thing happened to mine and the ball of it sunk into my skin and skin kept growing over it. You need more room for it. You should go to your piercer and see if they can put a bigger belly ring in it until it heals.
YES if you talk with your belly
no
yes
3 to 6mths..it also depends how your belly button react
eBay
you cant
Nothing