Y’all this guy is an actual electrical engineer. His name is Mehdi Sadaghdar and he has his own fucking youtube channel

pretty sure the point of becoming an electrical engineer is specifically to do dumbass shit like the above as often as possible (tho graphite conducting surprised me).

Have known quite a few electrical engineers in my day and flatted with a couple of them, can confirm. 

(also, the conductive properties of carbon were the foundation for the first widespread consumer batteries)