1. verb. To turn an obvious or blatant lie into the truth, and sell it boldly, with conviction.
2. Colloquial jargon. Often used in expressions to show how bogus something is, but one is forced to do it anyway. This a sort of rallying, self-motivating mantra.
1. General McChrystal truthified Pat Tillman's death, saying it was a Taliban ambush, when it was actually due to a very tragic and unfortunate friendly-fire incident.
2. Truthify, do or die, hwuh!