Here's pictures of a bris, where mouth techniques are used. I don't think that he is biting it in this instance - he's mostly just sucking the blood which is called metzitzah b'peh,

http://www.sexuallymutilatedchild.org/mohel.htm
Breukelen advocaat Reviewed by Breukelen advocaat on . foreskins anything that might be useful to know? do they make it any les preferable? better? worse? or does it even matter? Rating: 5