Is there any good way to make a cold boy laugh?

Want to make a cold boy laugh, in fact, this is not a very difficult thing, we just need to do the following:

1. First of all, you should know his preferences, so it is easier to find his jokes.

2, close the relationship between each other, try to make you and each other friends, so as to better play their own effects.

3. We can also learn some languages that tease boys online, so that they can feel a sense of humor.