there was an old man who was hit by a can thrown by someone from the flat. So he called for a nearby neighbour to get his grandson. He told the neighbour to relay this message to his grandson : ''Gong gong gong, gong gong gong gong, gong gong gong gong. this means, different hokkien tones are used for each word, so as to sound like the sentence below : '' grandfather says, can knocked grandfather, grandfather giddy"