Stercoranism
Stercoranism (from stercus, "dung") is a supposed belief or doctrine attributed reciprocally to the other side by those who in the eleventh century upheld and those who denied the Roman Catholic doctrine of transubstantiation, that the bread and wine offered in the Eucharist become in substance, but not in form, the body and blood of Jesus Christ. Adherents of transubstantiation accused those who believed in a solely spiritual presence of Christ in the Eucharist of asserting that what is presented as the body and blood of Christ is no more than what subsequently is subject to the normal digestive processes after ingestion, eventually passing through the intestines and being excreted through defecation.