I just think its meant to be funny, I know that mangia means to eat'to eat' in Italian.
Is he just jokingly trying to say we the people just want the shock value of the shit. the tabloid shit. I think he by saying give'give us some shit give us the shitshit' it just means more of the same shock value headlines they had been doing. Just my opinion I may be way off.---LOL- GET THAT GOAT, GET THE GOAT, I HAVE SOME QUESTION FOR THAT GOAT!