Counterwhistling, or the general propensity of people to derail the thought train

Counterwhistling, or the general propensity of people to derail the thought train

First, the main proof of my argument. Put one's self in a social situation with many people in a mostly quiet area. A public park works well. Begin whistling something when nobody else is whistling or creating any music. Someone will begin whistling something contrary. Even if you are whistling a universally known song the counterwhistler will whistle something completely contrary to what you whistle. It works. Like every time. It is real. But why?

Why do people counterwhistle? Why do they derail a train that is already in motion, or attempt to? I do not believe it is a conscious act. I do believe some people counterwhistle more than others. Some people have shown me to be counterwhistlers at any given moment. Others seem to never engage in the act. What causes this? Is there a motivation within them to go against something other people have started and if so is it something they learned or is it something they were born with? My 8 year old son is a counterwhistler. I don't believe I taught him to be one but perhaps I did and I don't yet see it. I once worked with a guy that was the perennial counterwhistler. At any given note of whistling he would begin whistling his own tune. Does this also happen in nature? For example, when birds sing, is it a counterwhistle?

This does not have to be simply a whistling act to create the same effect. Having been a musician most of my life I see it in band situations as well. Nearly invariably when one person is tuning their instrument another is playing something that interferes with the tuning. If one member is showing another member a "lick" or otherwise teaching something, another member is actively playing something contrary. This, in effect, is counterwhistling. Another area I can attest to counterwhistling is while someone is engaged in thought. There are times I will personally be caught in a state of personal discourse with a subject matter. If someone is aware I am engaged in such an act and they are unable to contribute to the subject matter at hand they will begin to counterwhistle (or attempt to derail the thought train) by introducing completely unrelated subject matter to the thinker.

It seems to me that the more adverse a person is, the more they are likely to be argumentative for little or no reason, the more they are a counterwhistler. Is there a term for this, is it a known thing? I'm not a psychologist. I'm not a sociologist. I'm just a guy who wonders about such things. Why do we think and act the way we do? I sure don't know.