It is a substance that cools and warms in equal measure, both sold and known as a product that brings pain relief. So when you hear that it brings soul-scouring pain if applied to one's wrinkly undercarriage, it flies in the face of known facts. Okay, so maybe it hurts. You might have even just watched your friend do it, and they sure aren't acting as if it's a good time. But surely it can't be that bad. One little dab is enough to put the myth to the test. One little dab can't do that much damage.