What is a naturally occurring electrostatic discharge in the atmosphere usually seen during thunderstorms?

I was fortunate to survive being struck by lightning.

I love to watch lightening. Nothing like a good thunderstorm to go to sleep with. Unless of course if you lose your electricity then that’s another story!

I like it when the picture doesn't give away the answer. Especially in an easy question.

jeez, that was an easy one wasn't it??