Humour is international. Everybody has humor but at differents levels, depends on culture, age... Also, There are people who work making people laugh, such as: comedians and clowns; however, not everybody has this talent.
People like humour, life with humour is more funnier and nicer. Everybody wants and needs be happy. They say that happiness is for "ignorants", but I think that happiness is very important for our life.
Humour, happiness,enjoying and fun, in my opinion they go together. There is only one life and a sad life is not worth having.