Abstract: The invention relates to a system for processing a slaughtered poultry carcass part at least comprising a back portion and legs, comprising a conveyor for moving the carcass part, suspended, in a conveying direction, and comprising a groin skin cutting device for cutting groin skin while the carcass part is moved past said cutting device, comprising a cutter having an elongate base portion having a cutting edge, a puncturing tip at an upstream end of the cutter, the cutter positioned and configured such that, the puncturing tip punctures groin skin upon movement of the carcass part in the conveying direction thereby creating a puncture hole so that the cutter enters underneath the groin skin, wherein the groin skin is cut by the cutting edge making a cut through the groin skin starting from the puncture hole, as a result of the continued movement of the carcass part.