The message at the end of the credits reads:
Enter our competition: Send us a quantity of cash: Highest single amount wins half the total received.
At the beginning of the end credits, right after it says "Double the Fist", there's a message that reads:
WARNING: This show contained mature concepts and may not have been suitable for some viewers
In the background of the park in which The Womp is training Brad, you see a dinosaur (probably a T-Rex), then a giraffe, and then a cow, the latter of which is being abducted by a UFO.
Kanangra is a fictional town created by the writers. It was originally going to be the actual Sydney suburb of Marrickville.
Phillip Nugent is played by Bryan Moses' dad, Ralph Moses.
The character of Edith Moses in this episode was based on, and named after, the grandmother of Bryan Moses, who plays Rod Foxx, who, in the episode, trains Edith.