Some people are too much the other way. I knew a fellow once whose natural tendency to laugh at everything was so strong that if you wanted to talk seriously to him, you had to explain beforehand that what you were going to say would not be amusing. Unless you got him to clearly understand this, he would go off into fits of merriment over every word you uttered. I have known him on being asked the time stop short in the middle of the road, slap his leg, and burst into a roar of laughter. One never dared say anything really funny to that man. A good joke would have killed him on the spot.