Thongs aren't bad. My sister has a huge obsession with them, and I have 1 pair (for those sensual moments)... I don't wear them often, but they're more comfy than the pvc undies I have
As for crapping myself, it's only ever happened once. It was when I stayed for a week at my aunt's house (I was 6), and I was dreadfully afraid of her bathroom (specifically the toilet) and spiders. The rest of the story is fairly self-explanatory. My cousins used to crap and wet their beds all the time, so she wasn't mad at me at all.