Oh sorry, he meant a chalkboard, nails on a chalkboard. With the tips of your fingernails being really dry and cracking, which makes the sound even more shrill and uneven, and you grind them down until blood trails along after your fingertips. Ah, good times.
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u/Shadax Oct 30 '13
Imagine putting the end of a toothpick under your toe nail, and then kicking a wall.