Why would anyone need tricks to do this? I don't know a single person that didn't find out they could stick a needle through the top layers of skin without feeling it while still in primary school (that's under 11). I have to admit I'm absolutely amazed that anyone could not know this.
Edit : And to scotth's point about the front of the hand, it is easiest to do on your fingertips, the only place that is at all tricky is the center of the palm since it is curved awkwardly.
Edit : And to scotth's point about the front of the hand, it is easiest to do on your fingertips, the only place that is at all tricky is the center of the palm since it is curved awkwardly.
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