Can mood influence people’s ability to produce humorous verbal messages? Based on recent theories linking affect to social cognition and information-processing strategies, this experiment predicted and found that positive mood increased people’s ability to generate more creative, humorous, and elaborate verbal contents. Participants viewed positive, neutral, or negative videos, then produced verbal captions to fit four different cartoon images. Their messages were rated for creativity, humor, and elaboration by two trained raters, and the processing latency to produce each message was also recorded. Results showed that positive mood resulted in more creative and humorous messages, and that this effect was significantly mediated by mood-induced differences in information-processing strategies. The results are interpreted as supporting recent theories linking affect to cognition, and the theoretical and practical implications of the findings for everyday verbal communication are considered.