#[0] Metzitzah b'peh is a controversial practice that is associated with some branches of the ultra-Orthodox Jewish community. It involves using the mouth to suck blood from the circumcision wound of a baby boy after he has undergone a ritual circumcision or brit milah. It is important to note that this practice is not a requirement of Jewish tradition, nor is it practiced by the majority of Jews who perform circumcision. In recent years, metzitzah b'peh has been the subject of much debate and criticism due to concerns over health and safety risks associated with the practice.