In high school on the first day of school, seniors tried to convince freshman there was a swimming pool on the roof.
Some freshman actually believed there was a pool on the roof and went up to see. The door to the roof automatically closes and locks when you exit.
All day long on the first day of school teachers and janitors had to constantly go to the roof and rescue freshman.
My friends and I think differently about it. I thought it was wrong, they thought it was funny.