The best thing to do to an unruly, disobedient, spoilt child?
Act like a unruly, disobedient, spoilt child.
Watch them change. Guaranteed.
Reverse psychology peeps
"WAAAA I don't wanna go a bed yet!"
"WAAAA why won't you just go to ****ing bed you little C***!!!!!"
"..."
I hope you never have children.