Eating that many bananas is just not a-peeling

You would die from things other than radiation long before then. For instance, rupturing your stomach and leaking out acids and enzymes which rip you apart from the inside out. Or dehydration.

And since the main ingrediant in lethal injection is potassium

you'd die of a potassium overdose before the radiation got you

Now we really know how Nine died.

So this is how I die