Biting into a popsicle is like nails on a chalkboard for me. Even when someone else does it!
My husband thinks I'm insane because I can't stand if he scratches my jeans in the "wrong" direction. I suppose that one needs some elaboration. You know how jeans have a little ribbing type texture that runs on a diagonal? Well he will sometimes absentmindedly lay his hand on my leg and run his fingernails against the grain. (((shiver)))
I know - I'm insane.
If you focus on the negative not only is that what you'll see, that's what you'll be.