A chorus of boos greeted Panathinaikos' 3-1 thumping at home to OFI Crete in the Greek Superleague on Saturday.
Dimitris Manos put the visitors ahead in the 33rd minute - and doubled their lead in the 49th.
Further woeful surrendering of possession led to a third in the 58th, Kosmas Tsilianidis providing the finish.
Federico Macheda pulled one back from the penalty spot in the 85th - Dimitrios Kourmpelis rounded off an appalling afternoon for the Athens giants when he was sent off in the 9th minute of injury time.