The dent in your upper lip directly under you nose where you put your finger when you shush someone. The myth as to why that mark is there goes like this:
Babies are born knowing all the secrets of the universe but an angel comes down and says "Shhhhhh" as he places his finger over the baby's mouth and seals them up because man is not allowed to know everything.
Small children often get a stripe of crusty snot in their shush mark.
by A. Parrot March 25, 2010
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