When Dermot visits Buster at the Ninja School for the Blind, Buster is helping out Mr. Wang. Mr. Wang is played by Brendan O'Carroll, the writer, producer and Mrs. Agnes Brown herself.
WILHELM SCREAM can be heard when Buster is driving the Tuk Tuk alongside the Liffey. The scream is heard from a pedestrian who has to jump the railings to escape the Tuk Tuks' path.
When Dermot and Buster arrive at the court room with the receipt, Dermot is seen on the horse in a chicken costume storming in. However in the next shot, is seen sitting in the crowd with a blue shirt on waiting for the verdict.
When Dermot and Maria visit Mrs Brown at her stall at the beginning of the film (when Dermot is wearing the gecko costume) in some shots the bunch of papers he is holding has a rubber band around them, and some there isn't.