The plug from my phone charger just broke. How do I get the metal prong out of the socket?

I unplugged my phone charger and one of the two metal prongs from the plug is stuck in the electric socket. It might not even be that stuck, but I didn’t want to try touching it for fear of the electric current. How can I safely nudge the metal piece out of the socket? (side question: will Verizon replace a charger that broke? I don’t think it has a warranty).