Tinkle, booger, flapjacks, schmuck. What makes a word funny?

It can be hard to guess what might make a stranger laugh. Now researchers at the University of Alberta, in Canada, have developed a formula. After reading a study in which participants rated the humorousness of some 5,000 English words, psychologists Chris Westbury and Geoff Hollis wanted to break down what makes a word intrinsically comical. They expanded the list to almost 45,000 words, then generated a complex statistical model to score the funny factors and analyze the humor of each one.