Two more script changes that put extra pressure on the episode were a post-animatic rewrite and a complete character change. In the original script for the episode, Lenny was going to be Homer's rival as the Plow King. The idea was quickly dropped because it did not seem to fit in. The post-animatic rewrite was to include the joke in which Homer uses the radio dial to tip the precariously balanced plow back onto the road. This joke was created by Conan O'Brien, and the writers liked it so much that they included it in the episode.