There are 11 people hanging onto a rope that comes down from an airplane. 10 of them are 北姑, and one is a Hong Konger.
They all decide that one person should get off because if they don't, the rope will break and everyone will die.
No one can decide who should go, so finally the Hong Konger, in perfect 煲冬瓜, delivers a very touching speech, ending with the words, "I'll get off." All the 北姑 were moved by the HKer's speech, start clapping.