Has an AFL game ever ended 90-40?
Exactly once. On August 30, 1980, Geelong beat Footscray 90-40, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 90-40 in league history.
That makes 90-40 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 91-40 has happened 3 times and 90-41 has happened never.