Symphorophilia. How can I explain it? I'll take you frame-by-frame it: it's another way to talk about a person whose sexual arousal depends on staging or watching a disaster, like a fire or automobile accident.
Sound like we're out of Matt-Dillon-being-a-racist-and-then-having-to-rescue-the-lady-he-was-a-racist-to territory yet? Yes, we're talking about Crash, the only Crash that matters. An adaptation of J.G. Ballard's controversial novel, David Cronenberg's Crash concerns a man who falls in with a group of folks who all become sexually aroused by staging and participating in real car-crashes. The very explicit, unsettling combination of sex and violence made Crash infamous. Many years removed from the hoopla, though, it stands as another essential exploration of body horror from the the sub-genre's master.