I am convinced that the people who make sure to mention at least once during a conversation or an argument that they never lie

Everybody lies - House M.D.

For thousands of years we had 2 genders, i dont believe a thing from the lbrstxyz community.

I lie a lot. Even that is a lie.

I never lie. Not even once
In fact I told that to a lie detector and then maury polvich came in and said"That was a lie!"

Yep. Self delusion is deep.

I doubt that assessment, if someone says they never lie then it probably means that they try to avoid lying to the best of their ability, but is also somewhat mistaken in their claim.