You know what hurts like hell? Silicone spatulas. Like hairbrushes, they can be found in most households these days (although some still use metal/wooden ones) Just a dozen smacks or so leaves me squirming. There’s something about the slight bendiness of the silicone that gives it an extra harsh sting. At the same time, the silicone is nice and smooth and will never cut the skin. Just leave a very red and very sore bottom!