“The scientific cavalry are in sight!” Boris hears the thunder of their hooves just beyond the brow of the hill! lol……..He means there is a vaccine on the way. It’s incredible how he lurches from “wordsmithery” = a skillful way with words or eloquence to stuttering and “waffle” when he’s completely unprepared. Waffle. As well as being a delicious national treat of the Belgians it also means to talk without any particular direction or purpose.