No, it's a thing. I've never experienced it, but he was not the only person to have said they've had it happen to me, and there's records of murderers saying they experienced it.

I've seen armchair discussions about it possibly being a blend of the adrenaline, the breaking of the taboo of killing, and the rush of surviving conflict just flipping the entire nervous system on its head.

What I can definitely say is that sometimes a fight, a real fight where there's no ref, just someone trying to fuck you up, and you stopping them with violence of your own, there's a definite rush of chemicals that hit the brain, and the groin. It's a total body arousal sensation, where even a breeze across the hair on your arms is amplified. And that can turn very sexual in the right circumstances. I never personally got wood during a fight, but it did happen a couple of times afterwards, usually right after the shakes would settle down. It was like the adrenaline changed blood flow, and as it faded, it left the valves in the penis set up for arousal.

Not just for men, either. Back in my days as a bouncer, one of the main partners I had was a woman, and she would end up insanely horny after we'd have to fight someone. She'd get home and her and her girlfriend would be at it for hours from what they said.

Happens with other life or death circumstances too. Car wrecks, sometimes people come out of the rush of surviving and they're a little delirious and a lot horny. You work in hospitals, you hear stories. And, again, I've been in a couple of bad wrecks, and the urge to find a connection to life is strong, and sex is one of the most life affirming things we have.