Electrons vs Ground: What's the Difference?

[High_Voltage]

I know that electrons want to flow to ground (earth ground) so I have a few questions: Is it only AC current that flows to ground(I ask this because I saw a video of a person with a Tesla coil on their car and the electricity was going to the ground)? If I put the -(negative) side of a 9V battery on a cold water pipe that is connected to ground will the electrons flow, and drain the battery.The video with the Tesla Coil:

Watch from 2:03 to 2:29

 

[vk6kro]

It is just not true that electrons "want" to do anything.

Electrons flow where there is a potential difference to drive them. They flow from a negative potential to a positive potential depending on the existence of a conducting path.

This is the case when sky-to-ground lightning strikes occur and the storm clouds develop a negative charge relative to ground because even air provides a conducting path if the voltage is high enough.
If the charge was positive, then electrons would flow FROM the ground to the storm cloud.

Connecting one side of a battery to ground does not drain the electrons unless the other terminal of the battery is also connected to ground.