I only cut my nails when they need doing, but I always keep the index and thumb on my left hand at about 1/4". That way I never have trouble when I walk streets looking for coins off the floor! 2p coins on marble's a fucking nighmare! This technique ensure's it's swoop-cha-ching! swoop-ching, swoop-cha-ching-ching! All the way to the off-license, I'm not a fucking crack-head!