It's rude to keep repeating someone's name over and over.
Cai needs permission to sleep over at his friend's house, but his mother is working.
Cai wants to get his mother's attention.
Cai waits until his mother is at a good stopping point before asking his mother about the sleepover.
Cai pokes his mother while chanting his mother's name to get her attention.
Cai spends the entire weekend at his friend's house.
Cai's mother punishes him by making him do all of the chores in the house.