Has an AFL game ever ended 108-40?
Exactly once. On August 30, 1913, Geelong beat St Kilda 108-40, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 108-40 in league history.
That makes 108-40 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 109-40 has happened never and 108-41 has happened never.