Ocean of Fear is the 16th episode of Adventure Time. It first aired on June 10th, 2010.
Finn and Jake were chasing a Newt for stealing a pair of boots. Making rhymes about the Newt, Jake followed the the Newt into the ocean. Finn, on the other hand, was about to do the same, but hesitated by the look of the water. Finn calls out to Jake "I'll poot on that Newt, as soon as I'm bare foot!", and takes of his shoes, but he still is hesitant at going in to the ocean, and he doesn't.