This slip-up take place in the episode of Spongebob when Squidward moves to the other neighborhood full of squids like him. While they're showing that he does the same thing every day, you'll notice that he rides his bike to the health food store, buys his "canned bread" and then walks straight to the musical band. When he goes into the store he parks his bike in the bike stand, but when he comes out, his bike stand is gone!