Has an AFL game ever ended 81-55?
Yes. AFL has seen a final score of 81-55 3 times. It first happened on August 29, 1936, when Geelong beat Richmond, and most recently on May 24, 1975, when Collingwood beat Essendon.
That makes 81-55 the 1534th most common final score out of 6,607 that have ever occurred in AFL. One point away, 82-55 has happened 3 times and 81-56 has happened 4 times. At one point the score disappeared for 34 years, between 1941 and 1975.