First, the doctor injects some painkillers into the two nerves that connect into the base of the penis. Once the penis is good and numb, it's possible to gently detach the inside of the foreskin from the shaft by pushing a blunt probe between the two. Then it's time for the snipping. The easiest way to do this is to use the "guided forceps" technique. In this procedure, the foreskin is grabbed and pulled forward over the head of the penisâÂÂcalled the glansâÂÂand clamped straight across with a long forceps. Now it's a cinch to cut the skin along the outside edge of the forceps, in much the way a barber might hold a lock of hair between his fingers and snip it with a pair of scissors. The metal arm of the forceps guides the incision and protects the head of the penis from injury.