No.
no i know this because my grandad had the center of his belly button cut of when he was a child and he is still with us.
It can, but doing so is harshly dangerous. your belly button doesn't have much skin since it once filled you up blood when your mother was pregnate. If you cut it off, you will experience uncontrolable bleeding and you probibly will die.
Yes you can
He died in a tragic accident.
I'm 11 weeks pregnant and my belly button has started to get firmer. My belly is also firmer and fuller, which is normal. My belly button is also a bit sore at times...I think this is because around weeks 16-20 it will start to pop out, which is also normal. your worries.
You throw up and get a huge pain for several days in the stomach, but most likely wont die
That depends on how you die. When the aorta bursts, one way to die, the pressure is so hard that blood comes out of every orifice including the belly button.
Unlikely, although hitting a vein does increase the chance of an infection.
no you could not die by doing a belly flop.
Pierre Belly died in 1814.
Léon Belly died in 1877.
I would say it depends on if your belly button is that deep, or if you just stabbed yourself in the intestines. Also if you did just stab yourself in the intestines, whether or not you seek medical attention.