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The inverse of a soul patch, a soul hole is a short, narrow mustache grown on the philtrum of the upper lip.

Famous sporters of the soul hole style of facial hair include silent film star Charlie Chaplin, Ecuadorian president Abdalá Bucaram, Israeli prime minister Levi Eshkol, and comedian Oliver Hardy.
Stop drawing soul holes on Obama's photos. It's impolite!
by Toomuch Introspection October 09, 2009