A steamed bun

A steamed walked on the road, he was hungry, to eat things, and then on into a bun.
A Steamed Bun, many of the things to eat, diarrhea, and then he turned into a steamed bun.
A steamed bun was walking in the streets, the accident happened, he would turn into a biscuit.
A Steamed Bun, was walking in the streets, the accident happened, he would become a biscuit with a heart ...