One of the many interesting things about Poland is that they uses circles and triangles to sign public toilets. The sign for a men toilet is a triangle, and a circle for women. Photo by problemdog

Here is a realistic approach from somewhere in Asia, or another from Somalia.

A different approache to visual communication.

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Origin: Somewhere in Asia
Originally uploaded by Nony (full size)

Human toilet sign, misapprehensions are …
Origin: USA, Los Angeles (Full size)
picture2

Weird health sign from Nicaragua, public strain not allowed!
Source: www.sandylevel.org
Origin: Central America, Nicaragua, (Full size)