What happens to a Batarang after it's used?

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NeonBoobs posted...
For someone who chooses not to kill, he sure is comfy with just lopping around sharp shurikens like nothing >_>

https://m.youtube.com/watch?v=1byycwl8qgc&pp=ygUYYmF0bWFuIGRvZXNuJ3Qga2lsbCBza2l0
Water+Fall=Radiation.