One time I was high and watching 'Dumb and Dumber' which makes me laugh my ass off normally, and doubly so stoned. Anyway, I was suddenly struck by how creepy teeth are. They look like little white rock tombstones jammed into people's gums. Anyway, it creeped me out big time and every few months or so I'll randomly get creeped out by teeth again and have to close my eyes.