The different sense of humor acts as a barrier between people to get along and become close. As one would find something funny, the other one would not find the humor in.

Hi, it means that if 2 people are friends or like each other but have different tastes in humour then it's hard to remain friends with that person. For example, one might get really offended by a rude joke whilst the other would laugh.

say , if one, in order to amuse or entertain himself or others, made a joke of another man but ignore this poor man's bitterness and embarrassment, then we can take his taste of joke as a kind of great strain on the affections of the man who being make fun of. We can understand such kind of example in Chinese ---将自己的快乐建立在他人的痛苦/窘迫之上

One man's meat is another man's poison. i think this example can illustrate the point