Preguntas sobre ejemplos de oraciones con, y la definición y uso de "Waddayaknow"

A: it's a way of expressing surprise... (slang for 'what do you know?')
for example, you go to a group and there's someone there - Susan - you did not expect.
you might say... "hey waddayaknow.. Susan's here too!"

(it's NOT something we would write)