You're dared to go into the bathroom.
Turn off the light.
Look in the mirror.
And say the words 'Bloody Mary' three times.
There is a ton of lore surrounding Bloody Mary. She's a witch, a ghost, a corpse. When she appears to you she scratches your eyes out. She screams. She wails.
When I was a child I did this a lot. I never actually saw Mary, but maybe you will. Are you brave enough to try and see her?
But...like...for real. Filming myself in a dark bathroom with candles lit and saying her name...it was a bit scary. Haha :D Anything for a good video!