I used to abuse clonazepam when it was being prescribed to me for depression. I though that it was not possible to overdose on it but I was wrong.
One day, I took far too many and completely lost it. I became very violent and almost got arrested for damaging people's property. And then I blacked out and woke up the next morning in someone's yard. I couldn't remember what happened but my friend told me about it.
I basically lost the ability to reason and use logic when I overdosed on it. I'm glad I stopped abusing drugs, I would have definitely died on one of those days.