Turd is a happy and friendly soul who right from the beginning of his life within his "host", Stan, wants to make friends with everyone in his vicinity. As he is a turd that means both Stan and his internal organs, the lungs, the kidneys, his heart and brain as well as his stomach. He is both surprised and disappointed when none of them is friendly, but shun him at all times. 

Most of all he is surprised that all of them want him to leave Stan's body. 

"Why?" he asks. "I was born here just like you were, so why can't I stay?"

Big drama when he refuses to leave, but will he succeed in his plan of staying forever? And should he be allowed to stay?