A lot of times in life you see the cool kids, the popular persons, the influential persons exerting power.
Power tends to corrupt, and absolute power corrupts absolutely. Great men are almost always bad men, even when they exercise influence and not authority, still more when you superadd the tendency or the certainty of corruption by authority. (John Dalberg-Acton, 1st Baron Acton)
How do some people exert power? By mocking others, by using sarcasm, by joking about others.
It’s almost never that the unsuccessful kid mocks the powerful master.
Thus, we associate power with sarcasm, and one tends to use sarcasm as a way of being powerful, himself.
Have you been mocked? You’ll tend to mock others.