I'm extremely bothered by erasing as well, so much so that even the sight of erasers gives me the chills and makes my teeth feel "itchy". Strangely enough, tapping the "offending eraser" above my upper lip alleviates the discomfort. I've never known of anyone else to have this issue.
I teach 5th grade. During my first year, I also had a student bring her cat to school in her backpack. Some other students saw her giving it a drink from the water fountain and ratted her out :) I also had a little girl bring six frogs to school in her backpack. Unfortunately, only two were still alive by the time that they were discovered.
Giant Googly Eyes