Kim Possible's belly button is not explicitly shown in the TV show, so it is unknown whether it is an innie or outie.
Because your belly button is sensitive.
no it is phisically in possible
No you cannot kill someone by poking them in the belly button, that is a myth. The only way that could happen is if they Had a Hernia in their belly button and you ruptured it. If you stabbed them or shot them in the belly button it could possibly kill them. However a simple poke or twirl in their belly button will not harm them. A hard poke would hurt, but it would not be fatal.
yes
Ask your boyfriend/girlfriend to wiggle their finger in your belly button. They might do it.
yes that is totally normal, but not until later in your pregnancy.
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.
Of course!
yes you can
I personally can't, but it is possible to have it done.
It is possible. I can do it by pushing down on both sides of my belly button. I can't get it to stay out without tying it up, but some people can.