I left my kid in the school and made him wait in the parking lot for hours to scare him.
That is terrible. Why did you do that?
Haha I thought it was funny.
It is wrong to not take care of your kids and scare them. It could be very traumatic for their psyche and give them nightmare's.
I don't care if he get nightmares. I'm mad at him.
You should care about him getting nightmares and you should care about traumatizing him so much by leaving him alone for hours. A traumatized child does not become a functioning adult.