I felt a hand on top of my head begin to slowly pull off my balaclava. A second person joined in. I countered by digging my long sharpened-to-a-point fingernails into their flesh knowing full well it would work. After the initial pained yelp I heard: "Right! I know who it is!" Maybe they did maybe they didn't. Maybe subconsciously it was my subtle way of satisfying their curiosity because these nails *are* my trade mark. I walked out in a huff because my goggles could not be re-adjusted without my nails being in full view and definitely giving the game away. I went home (nearby) and came back in a complete change of clothes.