The following day a new barber moves into Saucy-by-Sea and he tells Tanya and Peregrine to come and get their hair cut at his shop the next day. However, when they arrive it is revealed that the barber is actually going to snip out the parts of their tongues that make them cheeky.
When Tanya returns to school the following Monday, she is no longer badly-behaved, and her tongue is considerably shorter . . .