Nope
Yes, Kim Possible's belly button is an innie.
Because your belly button is sensitive.
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.
no it is phisically in possible
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!
I personally can't, but it is possible to have it done.
yes you can
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.