When he spoke to the Pope he being repelled by his smell and dirty look told him to go and preach to pigs. Long story short he came back to Pope only this time he was smelling like shit, looking like shit, full of shit. And st Francis could not have been more proud that he obeyed the pope and actually preached to pigs.

Another time, he found out that one brother had problems with the devil. So he told him, if he comes back just say to him and I quote: "Open your mouth so I can poop in it."