Fairly Oddparents, The Easter Egg - Timmy's Friend Jimmy

In the episode where Timmy invites Chester and AJ to a sleepover, but they get in a fight and split up, there is a part where Cosmo sees an ant on the ground. He decides to name it Carl. Later, he finds a bee and names it Cindie. More towards the end of the episode, he sees a cat and names it Jimmy. They didn't put Sheen in because that would have been too obvious. Carl, Cindie, and Jimmy are all from Jimmy Nuetron. Jimmy and Timmy have a relationship, in other words, Jimmy Timmy power hour, which is why they made a reference to Timmy's friend Jimmy.