He was using his body language and gesticulation to make a digresion and push the speach in a new direction for a brief amount of time. Digresion is commonly used in public speaking when one is giving and example, introducing new topic, bringin a guest in, and so on.
Using the provided literature, a solid conclusion you can draw from “Baby Boomlet” is that in order to prevent so many vehicle accidents involving new drivers is we need to try a new approach to teaching or possibly lengthen drivers Ed/behind the wheel courses.
Hopefully this helps.
Delete usual. Custom and usual do not flow together and a custom is already a usual thing, just like tradition.