(nsfw) This poster hangs in Tokyo sushi restaurants, right next to the choking victim one.

(click image, via) Here's the partial English translation of this "penis handling" instructional diagram for—judging by the illustrations (see especially right, lower-ish)—10 year-old Japanese girls. (Yes, I know it's a cultural style called kawaii. But still.)
Previous strange sexual Japanese designs:
• Japanese muffins packaged in Tit cups.
• Condom packaging seems aimed at pre-teen girls.