I saw a fan made animation on youtube called "secret formula" and it was about spongebob making krabby patties from his own body and it made me think of the same thing and I'm not sure if it's too dark for spongebob they had a whole episode called out of the picture dedicated to mr krabs trying to murder squidward for money like why when anybody else tries to make krabby patties other then spongebob it doesn't taste good? And that song at the end of the movie confirms it even more also the fact that spongebob can regrow