It's one of the reasons Jackie lost some of his martial arts status to people like Jet Li -- sometimes he abandons masculinity in the interest of humor. Contrast that to Shaolin Wooden Men (1976) or even later movies like Gorgeous (1999) where he plays more digified characters and doesn't let himself become the joke.
Interesting. I do like Jet Li's style, and I especially like Chow Yun-Fat, so mature and dignified.