On a searious note My Grandma breaks em early n young with the car trick, kinda
Give her any guff and she puts you in the car and says you can sit here till Im ready to take you home.
5min later you have one sorry crying child that never pushes it again.
Cause granny lets ya know, she can let you go if need be.
My poor parents never learn that and I ran over them like a freightrain from day 1.