What is Judiasm's stance on joking, or in a broader sense being a jokester or lighthearted person? Is it seen as being a negative trait, or is being funny sometimes warranted in certain cases? If I am not mistaken in Gemara Avodah Zarah 46a the sages grant license and even consider it commendable to make fun of idolatry. I feel like excessive joking could be considered of a lack of Yiras shamayim though, and considered an serious aveira/bad mida.