へのへのもへじ

Etymology
From the hiragana characters used to draw it. The first two he are the eyebrows, the two no are the eyes, the mo is a nose, and the last he is the mouth. The outline of the face is made by the character shi, with the ear formed by the two short strokes of the dakuten (a diacritic indicating a voiced sound, here turning shi into ji).

Noun

 * 1) a face drawn using the hiragana characters, , , and