"But who tells you when to go to bed at night and things like that?" asked Annika.
"I tell myself," said Pippi. "First I tell myself in a nice friendly way; and then, if I don't mind, I tell myself again more sharply; and if I still don't mind, then I'm in for a spanking - see?"
Tommy and Annika didn't see at all...
From "Pippi Longstocking" by Astrid Lindgren.