Kuan Yew seldom cracked jokes, being a serious servant for last 40 years his boss would have wacked him and cut hi ssalary/bonuses if he ever joked. He can worked till 90 years old for simple reasons which many Sinkies' pig heads think no where - he has 2 nurses in attendance, 2 chauffeurs on shifts, 1 personal assistant, 1 office secretary - how on earth cannot work 8 hours a day till age 90???