How long does it take to go blind looking at the sun?

You could do it in just a couple of seconds if you really try. Find a place that's close to the equator, then do it on a day close to March 21 or September 21, at 12:00 noon, when the air is really clear. Keep your eyes wide open and don't squint. Good luck! I know you can do it!

Could be with a click of a finger depending how strong the light of the sun is