Interjection
stroll on
(informal) Expressing surprise or disbelief.
Barry and Carrie are getting married? Stroll on!
I started [in 1921] to write on the foundations of an approach to international trade theory that was to some extent new and for which I received the inspiration during a stroll on [the popular promenade] Unter den Linden in Berlin in 1920. Bertil Ohlin
To stroll on wharves, and in alleys and in streets and in the houses, waiting-rooms, even saloons, that is not a pleasant pastime unless for an artist. Vincent van Gogh