Macbook trackbar gives me electric shocks
I just got my MacBook Pro 2 months ago. When I charge my Macbook, the top surface next to the mouse pad feels like it is vibrating and the edges give me a sudden shock.

This is what I did next: I attached a wire that is connected to the Earth terminal in the electrical wall socket and the other end to the Macbook Pro corner and viola, the vibration and shock disappeared. 

The electric adaptor that converts AC 220V to 20/9 V DC into the USB Type C connector does not appear to be connected to the Earth terminal as you see below.