... walking like a man carrying a thermos flask of something that might
cause, if he dropped it or even thought about dropping it, the sort of
explosion that impels grey-beards to make statements like "And where this
crater is now, once stood the city of Wah-Shing-Ton", in SF B-movies.
        -- Crowley gets out the Holy Water
           (Terry Pratchett & Neil Gaiman, Good Omens)