Did you take the polygraph?

Like I said. Yes I did and they said I failed, just like my cop friend told me they would. They were just using it to try to get me to confess.

Subsequently, it's your answers that are admissable in court, not the results. If you're ever given a polygraph, they will ask you to lie on a question or two "as a baseline." Refuse to do that. They will use it against you.