Mine is constantly going off all the time, like I'm preparing an argument of some sort (which usually has nothing to do with what I need to be doing) and need to process all the information I can over and over again to make sure everything lines up. If someone talks for more than 5 seconds my own internal monologue kicks in until the person stops or like 30 seconds pass and I realize it distracted me. Makes it difficult to read as well, and on bad occasions it can last for hours. The only time this doesn't happen is if I'm intensely focused on something like a self-driven programming project.