海豚男
平常沒洗手只會被罵，
有人竟然因此發明了人工代糖！？
https://images.plurk.com/5Rj26qV0j7VayJzwWyGnvG.jpg https://images.plurk.com/6dOiFEwNGE1i2c1Pcc2s07.jpg https://images.plurk.com/74qVuZkg0dwMrO5i9593ra.jpg https://images.plurk.com/2vsP2DlgeLvPgrUBnDMQD.jpg https://images.plurk.com/222P9TDmho54gEbWndfCJl.jpg https://images.plurk.com/thDqs7DRrPjfLxPYIx9hB.jpg #冷知識時光機