4. The Religious Subtext Gives It Purpose
Although Sausage Party's explicit 'purpose' is realise one of Seth Rogen and Evan Goldberg's fantasies from when they were "f*ck a guy high", there is a higher purpose to the film, with the pair instilling their rawdy animation with a surprisingly astute dissection of modern religion.
It starts off with a little riff on the Israel debate between pastries of the respective beliefs, but quickly expands to a movie-long dissection of how people fall into blind faith and, rather interestingly, the pitfalls of just arrogantly preaching of atheism.
It's not exactly subtly delivered and hardly adds multiple layers to the film, but it does give it more than just lewd jokes, and that's always appreciated.