The Wizard of Cod is a restaurant in Cleveland. It is named after the 1939 movie: The Wizard Of Oz based on the 1900 book: The Wonderful Wizard of Oz.
Cosmo wanted to go there since he and his family landed on Cleveland because he thought he would help them to find their wands. Along the way he was joined by a Hairy Hobo, a mailbox and a mop, and Wanda told him it's just a food chain, but Cosmo goes as well, and Wanda & Poof follow. There they all eat some fishburgers, until Timmy came and Cosmo told them he had his wands on his pocket all the time so they are poofed home. The cashier there is a teen wearing a wizard costume. In the end of the episode, Wanda suggested to go there again, so she, Cosmo, Poof, the hobo, mailbox and mop all went singing to Cleveland.