If you get too much calcium you may get calcium deposits on your bones.
Too much calcium makes the bones brittle.
it will overflow
You can get cramps
If you get too much calcium in the body, you can get sick, or possibly a kidney stone.
it will go cold
I believe you can get kidney stones. But its rare.
nothing
You puke!!
You die
Calcium is needed for the development of the skeleton, which happens a lot in growing kids.
They have stomach ache.