This is an archaic tradition of some Orthodox mohels that involves oral removal of blood from the head of the baby’s penis as part of the brit milah ritual. This is potentially dangerous because it can spread infection from the mohel’s mouth to the newborn. Metzitzah is never practiced by progressive mohels or physician mohels and should be abandoned by all who do circumcisions. As a substitute, Orthodox mohels can now remove this blood by use of a glass pipette and gauze.