I don't normally use this blog just to signal boost Tumblr posts (that's what Tumblr is for) but check out this incredible analysis, "The Red Sponge: Spongebob's role in enforcing an oppressive, capitalistic society."
Patrick represents the bourgeois caricature of the working class that capitalists want you to buy into. He is ignorant, undereducated, and lazy. He lives under a rock, likely because he can’t afford anything else — although he doesn’t seem to mind. Patrick appears to deserve his poverty because he does nothing but sleep, yet he also seems at peace with his lot. This idea of the happy, unproductive bum simultaneously vilifies and justifies the proletariat. “See, they’re poor because they just don’t work hard enough! In fact, they like being poor!” Patrick Star is arguably one of the most offensive cartoon depictions of this generation.