The shortest form of speaking 'truth to power' that exists. Useful for when long-winded replies are not possible and because 'dissent is the highest form of patriotism'.
It's the built internalmechanism that reins in your ability to lie compulsively about your age, sex, hair colour, and/or location on the internet just becuase you can, some people have it, some people don't.
SkitZoe: I was playing elfquest online and I may have told silverkiss123 that I'm a fourteen-year-old emo abuse victim at which point he became very adamant about his love for me and determination to fly in from Belgium and rescue me. Do you think I can pull that off?
Internet Sociopath Lie Detector: That's a no, and now report immediately to church.