In seven studies (n = 1,133), adults tried to create funny ideas and then rated the funniness of their responses, which were also independently rated by judges. People were relatively modest and self-critical about their ideas. Extraversion (r = .12 [.07, .18], k =7) and openness to experience (r = .09 [.03, .15], k = 7) predicted rating one’s responses as funnier; women rated their responses as less funny (d = -.28 [-.37, -.19], k = 7). The within-person correlation between self and judge ratings was small but significant (r = .13 [.07, .19], k = 7), so people had some insight into their ideas’ funniness.