"Den gode gamle" is a danish phrase referring to act of tricking one (or more) gullible fool(s).
The phrase's origin is that of
Emil and
Mustafa utterly humiliating their opponents (mostly Morten), in a
game of table football, by letting their opponent think they've got a shot at winning. But ultimately the opponents (usually unaware of "Den gode gamle") end up loosing 7-8, always just a wee bit off that sweet sweet victory.