Normative Signs: The Poetry of "Ought"

Check out these lovely restroom signs from Berlin. In case it’s not obvious, they represent the standard (if somewhat exaggerated) male and female postures, respectively, for urinating. The fact that they may not be obvious is suggested by the fact that someone has helpfully added an H (Herren = gentlemen) and D (Damen = ladies) to the signs.

Is this a case of aesthetics over clarity? Or is the literalness (using body postures) just an attempt (successful or not) to cut through cultural and linguistic differences?

Thanks to Diana Gorbould for the photos.