I suspect it is a sensory-processing thing. I'm reading waaaayyyy too much into this, but people on the Asperger's syndrome spectrum--even slightly--and more li

I suspect it is a sensory-processing thing. I'm reading waaaayyyy too much into this, but people on the Asperger's syndrome spectrum--even slightly--and more likely to be in the HN commenter crowd--have peculiar sensory issues. Often you see it with things like aversion (or preference) for certain food textures, so it doesn't seem out of left field to hear that anticipatory auditory and sensory stimulus (like the death rattle of a showerhead, or the subsequent burst of lukewarm water) would be a trigger. And that it would be passed down genetically or by behavioral role models...