[GeniLoyd]

Long story, I was calm, the cops tried to scare the shit out of me with fake evidence and so on

Like I said, it is not your demeanor that is monitored by the detector, it dosent matter if you were "calm" or not, subconsciously your heart rate would increase because of the lie you are telling, added to the stress of who you are lying to, and the possible consequences of your actions, and you have the perfect signals that would be picked up by the lie detector.

One day, life is gonna hit you like a ton of bricks

I agree with your point of view.

It does