Inny Or Outie?

Though everybody has one No two are quite the same Some are in and some are out It was probably the doctor's aim I'm talking about the belly button For some a pocket for lent Tho most don't know how it got there Or even where it went It could even be a fire hazard For those with a great big belly Lent piled up for quite a while Tends to be a little bit smelly It used to be a feeding tube A type of feed bag if you will No messes to be cleand up For no food would ever spill And though it served its purpose It's now just decoration But still a pretty good place To start a conversation