It's not only stilettoes, those platform heels couldn't half hurt!!!
When we were much younger my sister and I were having something with chips for tea. When I thought that she wasn't looking I knicked a chip. The next time she was ready. I swear that she feigned disinterest as my fork neared her chips, but she had whipped off her platform shoe and was ready to pounce. The resulting blow chipped the bone in my elbow as I tried to defend myself.
I have never, ever, tried to pinch a chip ever since.