Person Trapped In Crypt Turns White Haired Overnight

Urban Legend:  A person makes a bet with  their friends that they can spend the night in a cemetery crypt and is found in the morning insane with snow white hair.

The Story:
A person is dared to spend the night in a crypt in a local cemetery and is found in the morning totally insane and their hair has turned snow white. This one can vary from biker club initiation, fraternity or sorority initiation or a dare between a group of kids. It takes place usually in an gated above ground crypt. The person is locked in with the dead and left over night. No one knows what actually happens to said person because they never speak again, their hair turns snow white and they go insane.

Origins:
This legend has been told as having happened in various parts of the United States but no true origins can be found. I actually heard this one when I was growing up.