Tonton Streaming Fish Hooks (2010) S1E6 - Happy Birthfish Jocktopus

When Jocktopus's birthday comes up, he warns every student in freshwater high that if they don't bring a gift for him, they will get "pounded" by him. When shopping for said gift Oscar suggests getting him money, which results in Oscar himself being given as a gift by his friends who don't want to be pounded. Bea and Milo try to get him back.