Unfortunately this self-debasing style of contradiction has become the norm, and the people I talk to can instantly notice when I am pouring sugar on top of a serving of their own ass. Perhaps they are simply noticing changes in my tone of voice or body language, but in sufficiently intellectual partners I've noticed that abruptly contradicting them startles them into thinking more often, though I avoid this in everyday conversation with non-intellectuals for fear of increasing resentment.