Violating the Eucharistic Fast

Oh, to be RC before Vatican II...

"The recipient of the Blessed Sacrament, whether priest or lay person, must be fasting from midnight immediately preceeding reception... That which is taken as food or drink must have been taken exteriorly, i.e., from outside the mouth. Consequently, it is not a violation of the fast to swallow blood from the gums, or teeth, or tongue, or nasal cavities; it would be a violation of the fast to swallow blood flowing externally from the exterior parts of the lips, or from a cut finger, or from the nose, or to swallow tears, unless in each case only a few drops entered the mouth and were mingled with the saliva. It is not a violation of the fast to swallow small remnants of food already in the mouth after midnight, however long after, for they are not taken from outside, but are mixed with the saliva, but food (v.g. sweets, lozenges, sugar, edibles), put into the mouth deliberately before midnight and then swallowed after midnight would violate the fast, for they cannot be considered as mere remnants or food."

-- Henry Davis, S.J., Moral and Pastoral Theology, Vol. 3