I was on a LAX - OGG flight recently in 1D on a 767. I was watching the lady in 1A digging in her hair and then inspecting her fingers repeatedly for a couple of minutes when I saw one of the most disgusting things I have ever seen on a flight... She took a long strand of her hair, stretched it out between her hands and proceeded to floss all of her teeth with it.
So, whats your gross out?