What?! I'm referring to that really interesting link from that page click here about what sounds we find the most unpleasant.
They're all pretty annoying, but I consistently found myself rating each sound as more annoying that the average score. For some of them, I wanted an "extra horrible" button!
The only sound that had an average score as high as mine was the vomiting, which suggests that people are reacting not just to the sound, but to the connotations that it creates in their mind.