Has an AFL game ever ended 131-50?
Exactly once. On July 15, 1995, Melbourne beat Fitzroy 131-50, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 131-50 in league history.
That makes 131-50 the 3884th most common final score out of 6,649 that have ever occurred in AFL. One point away, 132-50 has happened never and 131-51 has happened never.