Well, it IS Japan, and they absolutely adore their pornographic anime.

As the article mentioned, just about anything can be made to look nasty if you manipulate it enough...or if your mind just works that way. People see Jesus' face in a piece of toast or vaginas in scars left by broken off limbs on trees. It's very faint now, but I once burned myself on the bicep by leaning on a wall heater grate and it looked just like a scorpion....well, that's what some people said, I never thought so....it just looked like a scar.