I can remember that when i was 5 OR 6, some children bent me to a tree in a forest, and I had to stay there the entire night without sleeping.
I don't know if this one is worse, but........
When I was 14, I was on a trip with some guys to the mountains, and when we were to go home, they tricked me to say; "Just try to sleep if you're bored". And I did that, I expected them to wake me in some way, but no, I woke up and nobody was around, I didn't know where to go, I was alone far away in the mountains, I found the way back after some hours when I miraculously when I saw the guys' heads on the horizon, and I followed (ran) after them about 7 more times until they leaded the way back.