From a Japanese customs, entry form:

Sorry. This picture isn’t so good.
I’d like to draw your attention to item number 5, which states as prohibited articles: “Obscene or immoral materials, and Child pornography.”
Here again there are two rather interesting implications.

1. Child pornography is not included in the class of objects described as “Obscene or immoral materials.”

2. In order to be in violation of this rule one needs to have BOTH “Obscene or immoral materials” AND “Child pornography.”

Oh what a difference that “and” makes.

hmmm…

…stay tuned!