Mere skeletons of their former selves, SpongeBob SquarePants is at the boat bar counter manning the cash register and Squidward Tentacles is sweeping the restaurant floor on Halloween. The pair of cartoon characters are working themselves to death in the afternoon at the Krusty Krab after going on strike* an eternity earlier.
* - when Squidward thinks that Mr. Krabs is underpaying, he decides to do something about it. After joining the strike protest, SpongeBob dismantles the oppressive establishment board by board, saws the tables of tyranny in half and gnaws at the ankles of big business. To pay off the damages, the two have to work forever.
(sponge bob square pants: “squid on strike” gif via spongebob daily)