First time Zack and Cody use their special handshake
One scene shows Zack and Cody walking barefoot on each other's backs. As a result, Dylan Sprouse came up with the idea to stand barefoot on his brother's back. Cole Sprouse later said it would only be fair if he could also return the favor by stepping barefoot on his back.
After Dylan Sprouse wore a pair of socks for three days straight, he knew he wanted to trick Cole into thinking he had stinky feet in a scene where they were barefoot.
Dylan and Cole Sprouse were always barefoot on the set, and the director incorporated the scene where the twins stand barefoot on each other's back just for that reason.
The Amputator bears a slight resemblance to professional wrestler John Cena.