Some truth there was, but dash'd and brew'd with lies, To please the fools, and puzzle all the wise.

If you're lying, you're lying.

When witnesses concoct lies, they often miss the obvious.

Right, except I'm not going to lie to my mom, because what kind of bastard lies to his own mother?

But mothers lie. It's in the job description.

Sounding frank, honest, and sincere is, of course, a rhetorical strategy in itself, known from ancient literature as parrhesia. It’s often employed by liars.