The Absurd Visions from a Post-Hypnotic Suggestion

I hardly heard him for trying to keep track of what was going on in my skull. I knew it was just post-hypnotic suggestion, even remembered the session in Missouri when they'd implanted it, but that didn't make it any less compelling. My mind reeled under the strong pseudo-memories: shaggy hulks that were Taurans (not at all what we now knew they looked like) boarding a colonists' vessel, eating babies while mothers watched in screaming terror (the colonists never took babies; they wouldn't stand the acceleration), then raping the women to death with huge veined purple members (ridiculous that they would feel desire for humans), holding the men down while they plucked flesh from their living bodies and gobbled it (as if they could assimilate the alien protein) … a hundred grisly details as sharply remembered as the events of a minute ago, ridiculously overdone and logically absurd. But while my conscious mind was rejecting the silliness, somewhere much deeper, down in that sleeping animal where we keep our real motives and morals, something was thirsting for alien blood, secure in the conviction that the noblest thing a man could do would be to die killing one of those horrible monsters ...

A character debunks all the crazy things running through his head with rationality.