Given the differences in male and female laugh patterns, is laughter a factor in meeting, matching and mating? I sought an answer in the human marketplace of newspaper personal ads. In 3,745 ads placed on April 28, 1996 in eight papers from the Baltimore Sun to the San Diego Union-Tribune, females were 62% more likely to mention laughter in their ads, and women were more likely to seek out a "sense of humor" while men were more likely to offer it. Clearly, women seek men who make them laugh, and men are eager to comply with this request.